test(fix): Simplify existing-table test

We already have a test that covers each dep type; we don't need to cover
that here.

Author: epage

tests/testsuite/fix.rs

@@ -2602,9 +2602,7 @@ target-dep = ["dep:target-dep"]
 
 #[cargo_test]
 fn add_feature_for_unused_dep_existing_table() {
-    Package::new("bar", "0.1.0").publish();
-    Package::new("baz", "0.1.0").publish();
-    Package::new("target-dep", "0.1.0").publish();
+    Package::new("dep", "0.1.0").publish();
     let p = project()
         .file(
             "Cargo.toml",
@@ -2615,16 +2613,10 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-bar = { version = "0.1.0", optional = true }
-
-[build-dependencies]
-baz = { version = "0.1.0", optional = true }
-
-[target.'cfg(target_os = "linux")'.dependencies]
-target-dep = { version = "0.1.0", optional = true }
+dep = { version = "0.1.0", optional = true }
 
 [features]
-target-dep = ["dep:target-dep"]
+existing = []
 "#,
         )
         .file("src/lib.rs", "")
@@ -2635,9 +2627,9 @@ target-dep = ["dep:target-dep"]
         .with_stderr(
             "\
 [MIGRATING] Cargo.toml from 2021 edition to 2024
-[FIXED] Cargo.toml (2 fixes)
+[FIXED] Cargo.toml (1 fix)
 [UPDATING] `dummy-registry` index
-[LOCKING] 4 packages to latest compatible versions
+[LOCKING] 2 packages to latest compatible versions
 [CHECKING] foo v0.1.0 ([CWD])
 [MIGRATING] src/lib.rs from 2021 edition to 2024
 [FINISHED] `dev` profile [unoptimized + debuginfo] target(s) in [..]s
@@ -2654,18 +2646,11 @@ version = "0.1.0"
 edition = "2021"
 
 [dependencies]
-bar = { version = "0.1.0", optional = true }
-
-[build-dependencies]
-baz = { version = "0.1.0", optional = true }
-
-[target.'cfg(target_os = "linux")'.dependencies]
-target-dep = { version = "0.1.0", optional = true }
+dep = { version = "0.1.0", optional = true }
 
 [features]
-target-dep = ["dep:target-dep"]
-bar = ["dep:bar"]
-baz = ["dep:baz"]
+existing = []
+dep = ["dep:dep"]
 
 "#]],
     );