Get rid of all component builds specific .isolate.

net/third_party/nss/ssl_base.isolate

Index: net/third_party/nss/ssl_base.isolate
diff --git a/net/third_party/nss/ssl_base.isolate b/net/third_party/nss/ssl_base.isolate
deleted file mode 100644
index 3bae2bdd398f8ef07361c756e992ca9ac654b1a5..0000000000000000000000000000000000000000
--- a/net/third_party/nss/ssl_base.isolate
+++ /dev/null
@@ -1,16 +0,0 @@
-# Copyright 2014 The Chromium Authors. All rights reserved.
-# Use of this source code is governed by a BSD-style license that can be
-# found in the LICENSE file.
-#
-# This is what is included by base_unittests.
-{
-  'conditions': [
-    ['OS=="linux" and component=="shared_library" and use_openssl==0', {
-      'variables': {
-        'isolate_dependency_tracked': [
-          '<(PRODUCT_DIR)/lib/libcrssl.so',
-        ],
-      },
-    }],
-  ],
-}