Delete duplicate macro definitions (#7287)

Author: BRUCE11111

include/triton/Conversion/TritonGPUToLLVM/Utility.h

@@ -296,8 +296,6 @@ class TritonLLVMIRRewriter : public IRRewriter, public TritonLLVMOpBuilder {
 // Types
 #define ptr_ty(...) LLVM::LLVMPointerType::get(__VA_ARGS__)
 #define int_ty(width) rewriter.getIntegerType(width)
-#define i64_ty rewriter.getIntegerType(64)
-#define i32_ty rewriter.getIntegerType(32)
 #define i16_ty rewriter.getIntegerType(16)
 #define i32_ty rewriter.getIntegerType(32)
 #define i64_ty rewriter.getIntegerType(64)