delete extra %s in FileCheck

Author: jiahanxie353

llvm/test/CodeGen/RISCV/GlobalISel/irtranslator/vec-alu.ll

@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_mir_test_checks.py
-; RUN: llc -mtriple=riscv32 -mattr=+v -global-isel -stop-before=legalizer -simplify-mir < %s | FileCheck %s --check-prefixes=CHECK,RV32I %s
-; RUN: llc -mtriple=riscv64 -mattr=+v -global-isel -stop-before=legalizer -simplify-mir < %s | FileCheck %s --check-prefixes=CHECK,RV64I %s
+; RUN: llc -mtriple=riscv32 -mattr=+v -global-isel -stop-before=legalizer -simplify-mir < %s | FileCheck %s --check-prefixes=CHECK,RV32I
+; RUN: llc -mtriple=riscv64 -mattr=+v -global-isel -stop-before=legalizer -simplify-mir < %s | FileCheck %s --check-prefixes=CHECK,RV64I
 
 define void @add_nxv2i32(<vscale x 2 x i32> %a, <vscale x 2 x i32> %b) {
   ; CHECK-LABEL: name: add_nxv2i32