[clang] [clang][SPIRV] Remove volatile variants of GenericCastToPtr* built-ins (PR #146298)

[Victor Lomuller via cfe-commits]

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@@ -115,16 +85,6 @@ __spirv_GenericCastToPtr_ToGlobal(__generic const void *p,
                                   int) __SPIRV_NOEXCEPT {
   return (__global const void *)p;
 }
-static __SPIRV_overloadable __SPIRV_inline __global volatile void *
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Naghasan wrote:

Why removing these ? No binding it required as it boils down to an `addrspacecast` insn.

https://github.com/llvm/llvm-project/pull/146298