[SystemZ] Tighten branch tests

After r182274, the branches in these tests must always be short.

llvm-svn: 182358
diff --git a/llvm/test/CodeGen/SystemZ/branch-01.ll b/llvm/test/CodeGen/SystemZ/branch-01.ll
index 8ff91ac..f201ddd 100644
--- a/llvm/test/CodeGen/SystemZ/branch-01.ll
+++ b/llvm/test/CodeGen/SystemZ/branch-01.ll
@@ -6,7 +6,7 @@
 ; CHECK: f1:
 ; CHECK: .L[[LABEL:.*]]:
 ; CHECK: mvi 0(%r2), 1
-; CHECK: j{{g?}} .L[[LABEL]]
+; CHECK: j .L[[LABEL]]
   br label %loop
 loop:
   store volatile i8 1, i8 *%dest