[wrt] Move cases and remove suite for wrt-webappmgt-android-tests

Impacted Suite: wrt-packagemgtmanu-android-tests
Impacted TCs num: New 1,Update 0 Delete 0
Unit test Platform: Android
Unit test result summary: Pass 1, Fail 0, Block 0
Commnet:
Generate package， install and uninstall apk is ok.