[Clang][AArch64] Remove unnecessary and incorrect attributes from arm_sme.h.

These attributes were using the GNU attribute syntax, rather than the new
keyword attribute syntax, and they are no longer required as we have code
in SemaChecking to verify whether a builtin is compatible with its caller.

Author: sdesmalen-arm

clang/utils/TableGen/SveEmitter.cpp

@@ -1066,17 +1066,6 @@ void Intrinsic::emitIntrinsic(raw_ostream &OS, SVEEmitter &Emitter,
 
   std::string FullName = mangleName(ClassS);
   std::string ProtoName = mangleName(getClassKind());
-  std::string SMEAttrs = "";
-
-  if (Flags & Emitter.getEnumValueForFlag("IsStreaming"))
-    SMEAttrs += ", arm_streaming";
-  if (Flags & Emitter.getEnumValueForFlag("IsStreamingCompatible"))
-    SMEAttrs += ", arm_streaming_compatible";
-  if (Flags & Emitter.getEnumValueForFlag("IsSharedZA"))
-    SMEAttrs += ", arm_shared_za";
-  if (Flags & Emitter.getEnumValueForFlag("IsPreservesZA"))
-    SMEAttrs += ", arm_preserves_za";
-
   OS << (IsOverloaded ? "__aio " : "__ai ")
      << "__attribute__((__clang_arm_builtin_alias(";
 
@@ -1089,8 +1078,6 @@ void Intrinsic::emitIntrinsic(raw_ostream &OS, SVEEmitter &Emitter,
     break;
   }
 
-  if (!SMEAttrs.empty())
-    OS << SMEAttrs;
   OS << "))\n";
 
   OS << getTypes()[0].str() << " " << ProtoName << "(";