[clang] [HLSL][NFC] Cleanup - removed unused function, includes and param, fix typos (PR #113649)

[Chris B via cfe-commits]

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@@ -15,7 +15,7 @@
 // EMPTY-NEXT: CXXRecordDecl 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> <invalid sloc> implicit <undeserialized declarations> class RWBuffer
 // EMPTY-NEXT: FinalAttr 0x{{[0-9A-Fa-f]+}} <<invalid sloc>> Implicit final
 
-// There should be no more occurrances of RWBuffer
+// There should be no more occurrences of RWBuffer
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llvm-beanz wrote:

I can't spell... Thank you 😄 

https://github.com/llvm/llvm-project/pull/113649