Remove an errant piece of !dbg metadata from a test, NFC

llvm-svn: 337309
diff --git a/llvm/test/Transforms/InstCombine/debuginfo-variables.ll b/llvm/test/Transforms/InstCombine/debuginfo-variables.ll
index 50fffbf..d277b6c 100644
--- a/llvm/test/Transforms/InstCombine/debuginfo-variables.ll
+++ b/llvm/test/Transforms/InstCombine/debuginfo-variables.ll
@@ -19,7 +19,7 @@
 ; CHECK-NEXT:  [[C2:%.*]] = zext i16 %A to i64
 ; CHECK-NEXT:  call void @llvm.dbg.value(metadata i64 [[C2]], {{.*}}, metadata !DIExpression())
 ; CHECK-NEXT:  call void @escape32(i32 %c1)
-; CHECK-NEXT:  ret i64 %c2, !dbg !23
+; CHECK-NEXT:  ret i64 %c2
   %c1 = zext i16 %A to i32
   %c2 = sext i32 %c1 to i64
   call void @escape32(i32 %c1)