Remove CHANGELOG.next.toml entries that have been released with v0.55.2 (#2624)

## Motivation and Context
Removes changelog entries that have been released with `v0.55.2`
(#2623)

## Description
<!--- Describe your changes in detail -->

## Testing
<!--- Please describe in detail how you tested your changes -->
<!--- Include details of your testing environment, and the tests you ran
to -->
<!--- see how your change affects other areas of the code, etc. -->

## Checklist
<!--- If a checkbox below is not applicable, then please DELETE it
rather than leaving it unchecked -->
- [ ] I have updated `CHANGELOG.next.toml` if I made changes to the
smithy-rs codegen or runtime crates
- [ ] I have updated `CHANGELOG.next.toml` if I made changes to the AWS
SDK, generated SDK code, or SDK runtime crates

----

_By submitting this pull request, I confirm that you can use, modify,
copy, and redistribute this contribution, under the terms of your
choice._

Author: unexge

CHANGELOG.next.toml

@@ -10,164 +10,3 @@
 # references = ["smithy-rs#920"]
 # meta = { "breaking" = false, "tada" = false, "bug" = false, "target" = "client | server | all"}
 # author = "rcoh"
-
-[[smithy-rs]]
-message = """
-Implement layer for servers to handle [ALB health checks](https://docs.aws.amazon.com/elasticloadbalancing/latest/application/target-group-health-checks.html).
-Take a look at `aws_smithy_http_server::plugin::alb_health_check` to learn about it.
-"""
-references = ["smithy-rs#2540"]
-meta = { "breaking" = false, "tada" = true, "bug" = false, "target" = "server" }
-author = "jjant"
-
-[[smithy-rs]]
-message = "Implement `PluginPipeline::http_layer` which allows you to apply a `tower::Layer` to all operations."
-references = ["smithy-rs#2540"]
-meta = { "breaking" = false, "tada" = false, "bug" = false, "target" = "server" }
-author = "jjant"
-
-[[aws-sdk-rust]]
-message = "Implement std::error::Error#source() properly for the service meta Error enum."
-references = ["aws-sdk-rust#784"]
-meta = { "breaking" = false, "tada" = false, "bug" = false }
-author = "abusch"
-
-[[smithy-rs]]
-message = "Implement std::error::Error#source() properly for the service meta Error enum."
-references = ["aws-sdk-rust#784"]
-meta = { "breaking" = false, "tada" = false, "bug" = false, "target" = "client" }
-author = "abusch"
-
-[[aws-sdk-rust]]
-message = "The outputs for event stream operations (for example, S3's SelectObjectContent) now implement the `Sync` auto-trait."
-references = ["smithy-rs#2496"]
-meta = { "breaking" = false, "tada" = false, "bug" = true }
-author = "jdisanti"
-
-[[smithy-rs]]
-message = "The outputs for event stream operations now implement the `Sync` auto-trait."
-references = ["smithy-rs#2496"]
-meta = { "breaking" = false, "tada" = false, "bug" = true, "target" = "all" }
-author = "jdisanti"
-
-[[aws-sdk-rust]]
-message = "The AWS SDK now compiles for the `wasm32-unknown-unknown` and `wasm32-wasi` targets when no default features are enabled. WebAssembly is not officially supported yet, but this is a great first step towards it!"
-references = ["smithy-rs#2254"]
-meta = { "breaking" = false, "tada" = true, "bug" = false }
-author = "eduardomourar"
-
-[[smithy-rs]]
-message = "Clients now compile for the `wasm32-unknown-unknown` and `wasm32-wasi` targets when no default features are enabled. WebAssembly is not officially supported yet, but this is a great first step towards it!"
-references = ["smithy-rs#2254"]
-meta = { "breaking" = false, "tada" = true, "bug" = false, "target" = "client" }
-author = "eduardomourar"
-
-[[smithy-rs]]
-message = "Streaming operations now emit the request ID at the `debug` log level like their non-streaming counterparts."
-references = ["smithy-rs#2495"]
-meta = { "breaking" = false, "tada" = false, "bug" = true }
-author = "jdisanti"
-
-[[smithy-rs]]
-message = "Streaming operations now emit the request ID at the `debug` log level like their non-streaming counterparts."
-references = ["smithy-rs#2495"]
-meta = { "breaking" = false, "tada" = false, "bug" = true, "target" = "client" }
-author = "jdisanti"
-
-[[smithy-rs]]
-message = "The `enableNewCrateOrganizationScheme` codegen flag has been removed. If you opted out of the new crate organization scheme, it must be adopted now in order to upgrade (see [the upgrade guidance](https://github.com/awslabs/smithy-rs/discussions/2449) from March 23rd's release)."
-references = ["smithy-rs#2507"]
-meta = { "breaking" = false, "tada" = false, "bug" = false, "target" = "client" }
-author = "jdisanti"
-
-[[aws-sdk-rust]]
-message = """
-S3's `GetObject` will no longer panic when checksum validation is enabled and the target object was uploaded as a multi-part upload.
-However, these objects cannot be checksum validated by the SDK due to the way checksums are calculated for multipart uploads.
-For more information, see [this page](https://docs.aws.amazon.com/AmazonS3/latest/userguide/checking-object-integrity.html#large-object-checksums).
-"""
-references = ["aws-sdk-rust#764"]
-meta = { "breaking" = false, "tada" = false, "bug" = true }
-author = "Velfi"
-
-[[aws-sdk-rust]]
-message = "`AppName` is now configurable from within `ConfigLoader`."
-references = ["smithy-rs#2513"]
-meta = { "breaking" = false, "tada" = false, "bug" = true }
-author = "ysaito1001"
-
-[[aws-sdk-rust]]
-message = "Add support for omitting session token in canonical requests for SigV4 signing."
-references = ["smithy-rs#2473"]
-meta = { "breaking" = false, "tada" = false, "bug" = false }
-author = "martinjlowm"
-
-[[aws-sdk-rust]]
-message = "Add `into_segments` method to `AggregatedBytes`, for zero-copy conversions."
-references = ["smithy-rs#2525"]
-meta = { "breaking" = false, "tada" = false, "bug" = false }
-author = "parker-timmerman"
-
-[[aws-sdk-rust]]
-message = "Fix bug where an incorrect endpoint was produced for `WriteGetObjectResponse`"
-references = ["smithy-rs#781", "aws-sdk-rust#781"]
-meta = { "breaking" = false, "tada" = false, "bug" = true }
-author = "rcoh"
-
-[[aws-sdk-rust]]
-message = "Update the `std::fmt::Debug` implementation for `aws-sigv4::SigningParams` so that it will no longer print sensitive information."
-references = ["smithy-rs#2562"]
-meta = { "breaking" = false, "tada" = true, "bug" = true }
-author = "Velfi"
-
-[[aws-sdk-rust]]
-message = "`aws_smithy_types::date_time::Format` has been re-exported in SDK crates."
-references = ["smithy-rs#2534"]
-meta = { "breaking" = false, "tada" = false, "bug" = false }
-author = "ysaito1001"
-
-[[smithy-rs]]
-message = "`aws_smithy_types::date_time::Format` has been re-exported in service client crates."
-references = ["smithy-rs#2534"]
-meta = { "breaking" = false, "tada" = false, "bug" = false, "target" = "client" }
-author = "ysaito1001"
-
-[[smithy-rs]]
-message = "Fix generation of constrained shapes reaching `@sensitive` shapes"
-references = ["smithy-rs#2582", "smithy-rs#2585"]
-meta = { "breaking" = false, "tada" = false, "bug" = true, "target" = "server" }
-author = "david-perez"
-
-[[smithy-rs]]
-message = "Fix server code generation bug affecting constrained shapes bound with `@httpPayload`"
-references = ["smithy-rs#2583", "smithy-rs#2584"]
-meta = { "breaking" = false, "tada" = false, "bug" = true, "target" = "server" }
-author = "david-perez"
-
-[[aws-sdk-rust]]
-message = """Reduce several instances of credential exposure in the SDK logs:
-- IMDS now suppresses the body of the response from logs
-- `aws-sigv4` marks the `x-amz-session-token` header as sensitive
-- STS & SSO credentials have been manually marked as sensitive which suppresses logging of response bodies for relevant operations
-"""
-author = "rcoh"
-references = ["smithy-rs#2603"]
-meta = { "breaking" = false, "tada" = false, "bug" = false }
-
-[[smithy-rs]]
-message = "Add a sensitive method to `ParseHttpResponse`. When this returns true, logging of the HTTP response body will be suppressed."
-author = "rcoh"
-references = ["smithy-rs#2603"]
-meta = { "breaking" = false, "tada" = false, "bug" = false, "target" = "client" }
-
-[[aws-sdk-rust]]
-message = "Update MSRV to Rust 1.67.1"
-references = ["smithy-rs#2611"]
-meta = { "breaking" = true, "tada" = false, "bug" = false }
-author = "jdisanti"
-
-[[smithy-rs]]
-message = "Update MSRV to Rust 1.67.1"
-references = ["smithy-rs#2611"]
-meta = { "breaking" = true, "tada" = false, "bug" = false, "target" = "all"}
-author = "jdisanti"