Remove GYP files from components.

components/session_manager.gypi

Index: components/session_manager.gypi
diff --git a/components/session_manager.gypi b/components/session_manager.gypi
deleted file mode 100644
index e87d3e01c08a5f8cacd6a2ffc32d9a5ff52899c9..0000000000000000000000000000000000000000
--- a/components/session_manager.gypi
+++ /dev/null
@@ -1,27 +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.
-
-{
-  'targets': [
-    {
-      # GN: //components/session_manager/core
-      'target_name': 'session_manager_component',
-      'type': '<(component)',
-      'dependencies': [
-        '../base/base.gyp:base',
-      ],
-      'include_dirs': [
-        '..',
-      ],
-      'defines': [
-        'SESSION_IMPLEMENTATION',
-      ],
-      'sources': [
-        'session_manager/core/session_manager.cc',
-        'session_manager/core/session_manager.h',
-        'session_manager/session_manager_export.h',
-      ],
-    },
-  ],
-}