Auto merge of #105003 - flba-eb:only_windows, r=Mark-Simulacrum

Run Windows-only tests only on Windows

This removes the need to maintain an ignore-list of all other OSs.

See #102305 for a similar change.

Author: bors

src/test/codegen/dllimports/main.rs

@@ -1,17 +1,6 @@
 // This test is for *-windows-msvc only.
-// ignore-android
-// ignore-dragonfly
-// ignore-emscripten
-// ignore-freebsd
+// only-windows
 // ignore-gnu
-// ignore-haiku
-// ignore-ios
-// ignore-linux
-// ignore-macos
-// ignore-netbsd
-// ignore-openbsd
-// ignore-solaris
-// ignore-sgx no dynamic linking
 
 // aux-build:dummy.rs
 // aux-build:wrapper.rs

src/test/codegen/panic-abort-windows.rs

@@ -1,16 +1,5 @@
-// This test is for *-windows-msvc only.
-// ignore-android
-// ignore-dragonfly
-// ignore-emscripten
-// ignore-freebsd
-// ignore-haiku
-// ignore-ios
-// ignore-linux
-// ignore-macos
-// ignore-netbsd
-// ignore-openbsd
-// ignore-solaris
-// ignore-sgx
+// This test is for *-windows only.
+// only-windows
 
 // compile-flags: -C no-prepopulate-passes -C panic=abort -O