Delete bundled copy of NSS and replace with README.

nss/lib/softoken/softkver.c

Index: nss/lib/softoken/softkver.c
diff --git a/nss/lib/softoken/softkver.c b/nss/lib/softoken/softkver.c
deleted file mode 100644
index 3f20fad2743c97713571f9d6d7922e34073f88d5..0000000000000000000000000000000000000000
--- a/nss/lib/softoken/softkver.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 "softkver.h"
-
-#if defined(DEBUG)
-#define _DEBUG_STRING " (debug)"
-#else
-#define _DEBUG_STRING ""
-#endif
-
-/*
- * Version information
- */
-const char __nss_softokn_version[] = "Version: NSS " SOFTOKEN_VERSION _DEBUG_STRING;