Remove unused manifest.

This used to be used by the linter, but now it's actually using
build/android/AndroidManifest.xml to determine the minimum SDK
level we support.

Remove this file to avoid confusion.

Bug: None
Change-Id: I2ea60854d52276877ae9d51a9c1f379cfaa3ed5d
Reviewed-on: https://webrtc-review.googlesource.com/40661
Commit-Queue: Patrik Höglund <phoglund@webrtc.org>
Reviewed-by: Mirko Bonadei <mbonadei@webrtc.org>
Cr-Commit-Position: refs/heads/master@{#21677}
diff --git a/tools_webrtc/android/AndroidManifest.xml b/tools_webrtc/android/AndroidManifest.xml
deleted file mode 100644
index bb6d354..0000000
--- a/tools_webrtc/android/AndroidManifest.xml
+++ /dev/null
@@ -1,14 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<!--
-  This is a dummy manifest which is required by:
-  1. aapt when generating R.java in java.gypi:
-     Nothing in the manifest is used, but it is still required by aapt.
-  2. lint: [min|target]SdkVersion are required by lint and should
-     be kept up-to-date.
--->
-<manifest xmlns:android="http://schemas.android.com/apk/res/android"
-    package="dummy.package">
-
-      <uses-sdk android:minSdkVersion="16" android:targetSdkVersion="23" />
-
-</manifest>