Remove unused Android dummy APK

This is a leftover from our initial Android efforts.
It is not used anywhere and is only confusing to keep around.

The Android precompiled tools in http://review.webrtc.org/2353004/
still have some use when testing Android devices on Mac, so we'll
keep them around by request from henrike@

TEST=none
BUG=none
R=andrew@webrtc.org, henrike@webrtc.org

Review URL: https://webrtc-codereview.appspot.com/2344008

git-svn-id: http://webrtc.googlecode.com/svn/trunk@4927 4adac7df-926f-26a2-2b94-8c16560cd09d

DEPS

@@ -178,9 +178,6 @@ deps_os = {
     "tools/android":
       (Var("googlecode_url") % "webrtc") + "/deps/tools/android@4258",
 
-    "tools/android-dummy-test":
-      (Var("googlecode_url") % "webrtc") + "/deps/tools/android-dummy-test@4244",
-
     "third_party/android_tools":
       From("chromium_deps", "src/third_party/android_tools"),
 

webrtc/webrtc.gyp

@@ -39,7 +39,6 @@
         ['OS=="android"', {
           'dependencies': [
             '../tools/android/android_tools_precompiled.gyp:*',
-            '../tools/android-dummy-test/android_dummy_test.gyp:*',
           ],
         }],
       ],