Fix broken migration guides (#2015)

Author: ElliottjPierce

release-content/0.16/migration-guides/15482_bevy_reflect_Add_ReflectDeserializerProcessor.md

@@ -1,9 +1,3 @@
-> 
-[!NOTE]
-
-All 3 of the changed structures were added after 0.14, so this does not need to be included in the 0.14 to 0.15 migration guide.
-
-
 - `MeshPickingBackend` is now named `MeshPickingPlugin`.
 - `MeshPickingBackendSettings` is now named `MeshPickingSettings`.
 - `SpritePickingBackend` is now named `SpritePickingPlugin`.

release-content/0.16/migration-guides/16082_Fix_bevy_picking_plugin_suffixes.md

@@ -1 +1 @@
-- Remove the generic parameter when calling this method
+`DeferredWorld::trigger` no longer takes a generic argument. They type is inferred via `impl Event` instead of `T: Event`. If rust can not infer the type for you, consider specifying the type on the variable passed into the function rather than on the function itself.

release-content/0.16/migration-guides/16911_Remove_unused_generic_in_DeferredWorldtrigger.md

@@ -1,5 +1 @@
-> 
-This section is optional. If there are no breaking changes, you can delete this section.
-
-
-- Replace `CubicCurve::new_bezier` with `CubicCurve::new_bezier_easing`
+Replace `CubicCurve::new_bezier` with `CubicCurve::new_bezier_easing`.

release-content/0.16/migration-guides/17581_dont_use_bevy_pbr_for_base_bevy_gizmos_plugin.md

@@ -695,12 +695,6 @@ prs = [16567]
 areas = ["Reflection"]
 file_name = "16567_Rename_ArgListpush_methods_to_with_and_add_new_push_method.md"
 
-[[guides]]
-title = "bevy_reflect: Add `ReflectDeserializerProcessor`"
-prs = [15482]
-areas = ["Reflection"]
-file_name = "15482_bevy_reflect_Add_ReflectDeserializerProcessor.md"
-
 [[guides]]
 title = "bevy_reflect: Deprecate `PartialReflect::clone_value`"
 prs = [18284]
@@ -923,12 +917,6 @@ prs = [16827]
 areas = ["Rendering"]
 file_name = "16827_doc_fix_camera_link.md"
 
-[[guides]]
-title = "don't use bevy_pbr for base bevy_gizmos plugin"
-prs = [17581]
-areas = ["Rendering"]
-file_name = "17581_dont_use_bevy_pbr_for_base_bevy_gizmos_plugin.md"
-
 [[guides]]
 title = "`ExtractedSprites` slice buffer"
 prs = [17041]