Update O3-pipeline.ll

Author: lukel97

llvm/test/CodeGen/RISCV/O3-pipeline.ll

@@ -144,7 +144,6 @@
 ; CHECK-NEXT:       Greedy Register Allocator
 ; CHECK-NEXT:       Virtual Register Rewriter
 ; CHECK-NEXT:       RISC-V Coalesce VSETVLI pass
-; CHECK-NEXT:       Debug Variable Analysis
 ; CHECK-NEXT:       Virtual Register Map
 ; CHECK-NEXT:       Live Register Matrix
 ; CHECK-NEXT:       Greedy Register Allocator