Remove duplicate option.

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@137638 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Driver/ToolChains.cpp b/lib/Driver/ToolChains.cpp
index 4ff0a64..77aea08 100644
--- a/lib/Driver/ToolChains.cpp
+++ b/lib/Driver/ToolChains.cpp
@@ -781,7 +781,6 @@
     case options::OPT_fapple_kext:
       DAL->append(A);
       DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
-      DAL->AddFlagArg(A, Opts.getOption(options::OPT_static));
       break;
 
     case options::OPT_dependency_file: