Revert "Travis-CI: Try again"

This reverts commit cf4a101fe617b66dd992d51bd8eb7a3caa45a1d2.
diff --git a/.travis.yml b/.travis.yml
index 094207e..ab9c4a9 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -4,7 +4,7 @@
     - tools
     - platform-tools
     - build-tools-22.0.1
-    - android-23
+    - android-22
     - extra-android-support
     - extra-android-m2repository
     - extra-google-m2repository
\ No newline at end of file