Removing a redundant, but harmless, %s; NFC.

llvm-svn: 300347
diff --git a/clang/test/Modules/ExtDebugInfo.cpp b/clang/test/Modules/ExtDebugInfo.cpp
index c39bce9..3bd58a3 100644
--- a/clang/test/Modules/ExtDebugInfo.cpp
+++ b/clang/test/Modules/ExtDebugInfo.cpp
@@ -16,7 +16,7 @@
 // RUN: %clang_cc1 -std=c++11 -debug-info-kind=standalone \
 // RUN:     -dwarf-ext-refs -fmodule-format=obj \
 // RUN:     -triple %itanium_abi_triple \
-// RUN:     -include-pch %t.pch %s -emit-llvm -o %t-pch.ll %s
+// RUN:     -include-pch %t.pch %s -emit-llvm -o %t-pch.ll
 // RUN: cat %t-pch.ll |  FileCheck %s
 // RUN: cat %t-pch.ll |  FileCheck %s --check-prefix=CHECK-PCH