[llvm] [AMDGPU] Remove VT helpers isFloatType, isPackedType, simplify isIntType (PR #77987)

[Jay Foad via llvm-commits]

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@@ -781,7 +781,7 @@ class MUBUF_AtomicRet_Pseudo<string opName, int addrKind,
 multiclass MUBUF_Pseudo_Atomics_NO_RTN <string opName,
                                         RegisterClass vdataClass,
                                         ValueType vdataType,
-                                        bit isFP = isFloatType<vdataType>.ret> {
+                                        bit isFP = vdataType.isFP> {
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jayfoad wrote:

Fold this into its only use on the line below?

https://github.com/llvm/llvm-project/pull/77987