Delete bundled copy of NSS and replace with README.

nss/lib/ckfw/builtins/ckbiver.c

Index: nss/lib/ckfw/builtins/ckbiver.c
diff --git a/nss/lib/ckfw/builtins/ckbiver.c b/nss/lib/ckfw/builtins/ckbiver.c
deleted file mode 100644
index 208066ca36f7589a5fd0dcdedf863ae914a49e9e..0000000000000000000000000000000000000000
--- a/nss/lib/ckfw/builtins/ckbiver.c
+++ /dev/null
@@ -1,18 +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/. */
-
-/* Library identity and versioning */
-
-#include "nssckbi.h"
-
-#if defined(DEBUG)
-#define _DEBUG_STRING " (debug)"
-#else
-#define _DEBUG_STRING ""
-#endif
-
-/*
- * Version information
- */
-const char __nss_builtins_version[] = "Version: NSS Builtin Trusted Root CAs " NSS_BUILTINS_LIBRARY_VERSION _DEBUG_STRING;