Auto merge of #140941 - ferrocene:ja/gh140939-fix-async-drop-test, r=petrochenkov

ui/async-drop-initial: factor in panic strategy in destructor size check

the size of `AsyncStruct`'s destructor depends on whether the configured panic strategy is 'unwind' or 'abort' so factor that into the test using conditional compilation

fixes rust-lang/rust#140939
fixes rust-lang/rust#140493
diff --git a/src/bootstrap/defaults/bootstrap.compiler.toml b/src/bootstrap/defaults/bootstrap.compiler.toml
index 269b901..9dcb20e 100644
--- a/src/bootstrap/defaults/bootstrap.compiler.toml
+++ b/src/bootstrap/defaults/bootstrap.compiler.toml
@@ -30,8 +30,6 @@
 # Having this set to true disrupts compiler development workflows for people who use `llvm.download-ci-llvm = true`
 # because we don't provide ci-llvm on the `rustc-alt-builds` server. Therefore, it is kept off by default.
 assertions = false
-# Enable warnings during the LLVM compilation (when LLVM is changed, causing a compilation)
-enable-warnings = true
 # Will download LLVM from CI if available on your platform.
 # If you intend to modify `src/llvm-project`, use `"if-unchanged"` or `false` instead.
 download-ci-llvm = true