Delete bundled copy of NSS and replace with README.

nss/lib/libpkix/pkix/checker/pkix_certchainchecker.h

Index: nss/lib/libpkix/pkix/checker/pkix_certchainchecker.h
diff --git a/nss/lib/libpkix/pkix/checker/pkix_certchainchecker.h b/nss/lib/libpkix/pkix/checker/pkix_certchainchecker.h
deleted file mode 100755
index ff6454761e31c32ad7346411b936ab10aa37e48e..0000000000000000000000000000000000000000
--- a/nss/lib/libpkix/pkix/checker/pkix_certchainchecker.h
+++ /dev/null
@@ -1,36 +0,0 @@
-/* This Source Code Form is subject to the terms of the Mozilla Public
- * License, v. 2.0. If a copy of the MPL was not distributed with this
- * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
-/*
- * pkix_certchainchecker.h
- *
- * CertChainChecker Object Type Definition
- *
- */
-
-#ifndef _PKIX_CERTCHAINCHECKER_H
-#define _PKIX_CERTCHAINCHECKER_H
-
-#include "pkix_tools.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct PKIX_CertChainCheckerStruct {
-        PKIX_CertChainChecker_CheckCallback checkCallback;
-        PKIX_List *extensions;
-        PKIX_PL_Object *state;
-        PKIX_Boolean forwardChecking;
-        PKIX_Boolean isForwardDirectionExpected;
-};
-
-/* see source file for function documentation */
-
-PKIX_Error *pkix_CertChainChecker_RegisterSelf(void *plContext);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _PKIX_CERTCHAINCHECKER_H */