Remove redundant check prefixes

Author: dheaton-arm

llvm/test/CodeGen/AArch64/sve-fmsub.ll

@@ -1,6 +1,6 @@
 ; NOTE: Assertions have been autogenerated by utils/update_llc_test_checks.py UTC_ARGS: --version 6
-; RUN: llc -mattr=+sve %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SVE
-; RUN: llc -mattr=+sme -force-streaming %s -o - | FileCheck %s --check-prefixes=CHECK,CHECK-SME
+; RUN: llc -mattr=+sve %s -o - | FileCheck %s --check-prefixes=CHECK
+; RUN: llc -mattr=+sme -force-streaming %s -o - | FileCheck %s --check-prefixes=CHECK
 
 target triple = "aarch64"
 
@@ -456,6 +456,3 @@ entry:
   %0 = tail call <7 x half> @llvm.fmuladd(<7 x half> %neg, <7 x half> %b, <7 x half> %neg1)
   ret <7 x half> %0
 }
-;; NOTE: These prefixes are unused and the list is autogenerated. Do not add tests below this line:
-; CHECK-SME: {{.*}}
-; CHECK-SVE: {{.*}}