Delete bundled copy of NSS and replace with README.

nss/lib/libpkix/pkix_pl_nss/pki/pkix_pl_publickey.h

Index: nss/lib/libpkix/pkix_pl_nss/pki/pkix_pl_publickey.h
diff --git a/nss/lib/libpkix/pkix_pl_nss/pki/pkix_pl_publickey.h b/nss/lib/libpkix/pkix_pl_nss/pki/pkix_pl_publickey.h
deleted file mode 100644
index 8918859d2d9868844d38bf142b0561f7263e80a5..0000000000000000000000000000000000000000
--- a/nss/lib/libpkix/pkix_pl_nss/pki/pkix_pl_publickey.h
+++ /dev/null
@@ -1,38 +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_pl_publickey.h
- *
- * Public Key Object Definitions
- *
- */
-
-#ifndef _PKIX_PL_PUBLICKEY_H
-#define _PKIX_PL_PUBLICKEY_H
-
-#include "pkix_pl_common.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-struct PKIX_PL_PublicKeyStruct {
-        CERTSubjectPublicKeyInfo *nssSPKI;
-};
-
-/* see source file for function documentation */
-
-PKIX_Error *pkix_pl_PublicKey_RegisterSelf(void *plContext);
-
-PKIX_Error *
-PKIX_PL_PublicKey_NeedsDSAParameters(
-        PKIX_PL_PublicKey *pubKey,
-        PKIX_Boolean *pNeedsParams,
-        void *plContext);
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* _PKIX_PL_PUBLICKEY_H */