Remove empty_search_image from Settings.

The image now lives in SettingsIntelligence. Having another copy here
creates deadweight and confusion.

Bug: 74410371
Test: rebuild
Change-Id: Id90fd412a629fcd663cd88cbe5da46e511055adc

res/drawable/empty_search_results.xml

@@ -1,30 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  ~ Copyright (C) 2017 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.
-  -->
-
-<vector xmlns:android="http://schemas.android.com/apk/res/android"
-    android:width="96dp"
-    android:height="96dp"
-    android:viewportWidth="24"
-    android:viewportHeight="24"
-    android:tint="?android:attr/colorControlNormal">
-
-    <path
-        android:fillColor="#000000"
-        android:pathData="M15.5,14h-0.79l-0.28-0.27c1.2-1.4,1.82-3.31,1.48-5.34c-0.47-2.78-2.79-5-5.59-5.34c-4.23-0.52-7.79,3.04-7.27,7.27
-c0.34,2.8,2.56,5.12,5.34,5.59c2.03,0.34,3.94-0.28,5.34-1.48L14,14.71v0.79l5.2,5.19c0.41,0.41,1.07,0.41,1.48,0l0.01-0.01
-c0.41-0.41,0.41-1.07,0-1.48L15.5,14z M9.5,14C7.01,14,5,11.99,5,9.5S7.01,5,9.5,5S14,7.01,14,9.5S11.99,14,9.5,14z" />
-</vector>