Remove -night qualified resources

Bug: 28358465
Change-Id: I3e9c3ec21bdc39426aa5f81373ca44e61eb6974a
diff --git a/res/values-night/colors.xml b/res/values-night/colors.xml
deleted file mode 100644
index f77017d..0000000
--- a/res/values-night/colors.xml
+++ /dev/null
@@ -1,20 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!-- Copyright (C) 2015 The Android Open Source Project
-
-     Licensed under the Apache License, Version 2.0 (the "License");
-     you may not use this file except in compliance with the License.
-     You may obtain a copy of the License at
-
-          http://www.apache.org/licenses/LICENSE-2.0
-
-     Unless required by applicable law or agreed to in writing, software
-     distributed under the License is distributed on an "AS IS" BASIS,
-     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-     See the License for the specific language governing permissions and
-     limitations under the License.
--->
-
-<resources>
-    <color name="directory_background">#ff111111</color>
-    <color name="item_doc_grid_protect_background">#88ffffff</color>
-</resources>