Update material_deep_teal_500 to #008577.

Better for accessibility.

Also update some direct usage of the old value to use canonical versions.

Also deleted some unused assets including a 130KB!!! png that was unused.

Bug: 74118164
Test: asset swap
Change-Id: I17e0f191ac44def71e5c83193db39def28f3f7f9

res/values-land/colors.xml

@@ -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>
-    <drawable name="fp_enrollment_header">#009688</drawable>
-</resources>