Eliminate questionable syntax for stdin redirection. This probably also speeds things up a bit.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@51357 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/Feature/globalredefinition3.ll b/test/Feature/globalredefinition3.ll
index d40d3e9..bbac2e9 100644
--- a/test/Feature/globalredefinition3.ll
+++ b/test/Feature/globalredefinition3.ll
@@ -1,4 +1,4 @@
-; RUN: not llvm-as < %s -o /dev/null -f |& grep \
+; RUN: not llvm-as %s -o /dev/null -f |& grep \
 ; RUN:   "Redefinition of global variable named 'B'"
 ; END.