[llvm] [DXIL] Remove extraneous include from DXILABI.h (PR #100620)

[Xiang Li via llvm-commits]

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@@ -13,6 +13,7 @@
 #ifndef LLVM_FRONTEND_HLSL_HLSLRESOURCE_H
 #define LLVM_FRONTEND_HLSL_HLSLRESOURCE_H
 
+#include "llvm/ADT/StringRef.h"
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python3kgae wrote:

StringRef is used in line 39:
    StringRef getSourceType();

Is it OK to remove the include?

https://github.com/llvm/llvm-project/pull/100620