[RISCV][NFC] Remove the unused RISCV_COALESCE_VSETVLI_NAME

This pass was removed in 1cff741

Author: pfusik

llvm/lib/Target/RISCV/RISCVInsertVSETVLI.cpp

@@ -36,7 +36,6 @@ using namespace llvm;
 
 #define DEBUG_TYPE "riscv-insert-vsetvli"
 #define RISCV_INSERT_VSETVLI_NAME "RISC-V Insert VSETVLI pass"
-#define RISCV_COALESCE_VSETVLI_NAME "RISC-V Coalesce VSETVLI pass"
 
 STATISTIC(NumInsertedVSETVL, "Number of VSETVL inst inserted");
 STATISTIC(NumCoalescedVSETVL, "Number of VSETVL inst coalesced");