Revert leftover cmake change

Author: arsenm

llvm/include/llvm/Config/llvm-config.h.cmake

@@ -33,9 +33,6 @@
 /* LLVM architecture name for the native architecture, if available */
 #cmakedefine LLVM_NATIVE_ARCH ${LLVM_NATIVE_ARCH}
 
-/* sizeof(uintptr_t) name for the native architecture, if available */
-#cmakedefine LLVM_NATIVE_ARCH_SIZEOF_UINTPTR_T ${LLVM_NATIVE_ARCH_SIZEOF_UINTPTR_T}
-
 /* LLVM name for the native AsmParser init function, if available */
 #cmakedefine LLVM_NATIVE_ASMPARSER LLVMInitialize${LLVM_NATIVE_ARCH}AsmParser