[Clang][NFC] Adopt simpified getTrailingObjects in CIRGenFunctionInfo (#143253)

Author: jurahul

clang/lib/CIR/CodeGen/CIRGenFunctionInfo.h

@@ -76,10 +76,8 @@ class CIRGenFunctionInfo final
 
   unsigned numArgs;
 
-  CanQualType *getArgTypes() { return getTrailingObjects<CanQualType>(); }
-  const CanQualType *getArgTypes() const {
-    return getTrailingObjects<CanQualType>();
-  }
+  CanQualType *getArgTypes() { return getTrailingObjects(); }
+  const CanQualType *getArgTypes() const { return getTrailingObjects(); }
 
   CIRGenFunctionInfo() : required(RequiredArgs::All) {}