[Benchmark] Fix conv-opt lowering flops benchmark

benchmark/makefile

@@ -33,7 +33,7 @@ all:$(OUT)
 	$(shell rm -rf tempFile)
 
 BUDDY_OPT_OPTIONS := -conv-vectorization="strip-mining=${STRIP}" -lower-affine -convert-scf-to-cf -convert-vector-to-llvm -finalize-memref-to-llvm -convert-arith-to-llvm -convert-func-to-llvm -reconcile-unrealized-casts
-MLIR_OPT_OPTIONS := -convert-linalg-to-loops -convert-linalg-to-llvm -lower-affine -convert-scf-to-cf -convert-scf-to-cf -convert-vector-to-llvm --finalize-memref-to-llvm -convert-func-to-llvm -reconcile-unrealized-casts
+MLIR_OPT_OPTIONS := -convert-linalg-to-loops -lower-affine -convert-scf-to-cf -convert-scf-to-cf -convert-vector-to-llvm --finalize-memref-to-llvm -convert-func-to-llvm -reconcile-unrealized-casts
 
 $(OUT):$(SOURCE)
 	@echo $*