Eliminate the -chained-pch flag and all of the frontend and libclang options associated with it. Chained PCH is the only way to build a PCH file that includes another PCH file

git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@138597 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/test/PCH/chain-remap-types.m b/test/PCH/chain-remap-types.m
index a45a79d..7886332 100644
--- a/test/PCH/chain-remap-types.m
+++ b/test/PCH/chain-remap-types.m
@@ -1,5 +1,5 @@
 // RUN: %clang_cc1 -emit-pch -x objective-c-header -o %t1 %S/Inputs/chain-remap-types1.h
-// RUN: %clang_cc1 -emit-pch -x objective-c-header -o %t2 %S/Inputs/chain-remap-types2.h -include-pch %t1 -chained-pch
+// RUN: %clang_cc1 -emit-pch -x objective-c-header -o %t2 %S/Inputs/chain-remap-types2.h -include-pch %t1
 // RUN: %clang_cc1 -include-pch %t2 -fsyntax-only -verify %s
 // RUN: %clang_cc1 -ast-print -include-pch %t2 %s | FileCheck %s