[clang] [libc++] Use -nostdlib++ on GCC unconditionally (PR #68832)

[via cfe-commits]

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@@ -14,14 +14,6 @@ include(CheckCSourceCompiles)
 # link with --uwnindlib=none. Check if that option works.
 llvm_check_compiler_linker_flag(C "--unwindlib=none" CXX_SUPPORTS_UNWINDLIB_EQ_NONE_FLAG)
 
-if(WIN32 AND NOT MINGW)
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EricWF wrote:

If everything passes, I guess we're good? I

https://github.com/llvm/llvm-project/pull/68832