Delete bundled copy of NSS and replace with README.

nspr/lib/libc/include/plerror.h

Index: nspr/lib/libc/include/plerror.h
diff --git a/nspr/lib/libc/include/plerror.h b/nspr/lib/libc/include/plerror.h
deleted file mode 100644
index cd85dd3f8a6def3125d1a64a3024896ba655404f..0000000000000000000000000000000000000000
--- a/nspr/lib/libc/include/plerror.h
+++ /dev/null
@@ -1,34 +0,0 @@
-/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
-/* 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/. */
-
-/*
-** File:        plerror.h
-** Description: Simple routine to print translate the calling thread's
-**              error numbers and print them.
-*/
-
-#if defined(PLERROR_H)
-#else
-#define PLERROR_H
-
-#include "prio.h"
-#include "prtypes.h"
-
-PR_BEGIN_EXTERN_C
-/*
-** Print the messages to "syserr" prepending 'msg' if not NULL.
-*/
-PR_EXTERN(void) PL_PrintError(const char *msg);
-
-/*
-** Print the messages to specified output file prepending 'msg' if not NULL.
-*/
-PR_EXTERN(void) PL_FPrintError(PRFileDesc *output, const char *msg);
-
-PR_END_EXTERN_C
-
-#endif /* defined(PLERROR_H) */
-
-/* plerror.h */