[llvm] [Support] Remove unused includes (NFC) (PR #116752)

[Florian Hahn via llvm-commits]

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@@ -13,7 +13,6 @@
 #include "llvm/Support/RWMutex.h"
 #include "llvm/Config/config.h"
 #include "llvm/Config/llvm-config.h" // for LLVM_ENABLE_THREADS
-#include "llvm/Support/Allocator.h"
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fhahn wrote:

This change seems to break building on macOS

I added it back in 5174d00365b619b5dcd2a451aaf7d844c36ce04d.

https://github.com/llvm/llvm-project/pull/116752