[wrt] Remove one test and update one case

- Remove one test due to the case is obsolete
- Update one test due to spec update

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
[wrt][xwalk-3059] Update 6 TCs for wrt-sharedmodemaun-android-tests

Impacted TCs num(approved): New 0, Update 6, Delete 0
Unit test Platform: Android
Android test result summary: Pass 6, Fail 0, Block 0
Merge pull request #1493 from wanghongjuan/wrt/packertoolmanu-update

[wrt] Remove one test and update one case
Merge pull request #1496 from wanghongjuan/wrt/xwalk-3059

[wrt][xwalk-3059] Update 6 TCs for wrt-sharedmodemaun-android-tests
Merge pull request #1502 from wanghongjuan/wrt/xwalk-3177

[wrt][xwalk-3177] Update one test for wrt-rtcoremanu-android-tests