[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- Remove one test due to the case is obsolete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
[webapi] Avoid add testharness repeatedly

- In some tests, testharness.js has been added by unitcommon.js, add testharness.js repeatedly will create a timeout result, so update it following unitcommon.js

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 188, fail 18, block 1
Merge pull request #1497 from haoxli/webapi/tizen-systeminfo-update

[webapi] Avoid add testharness repeatedly
[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
[wrt][xwalk-3177] Update one test for wrt-rtcoremanu-android-tests

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
Merge pull request #1502 from wanghongjuan/wrt/xwalk-3177

[wrt][xwalk-3177] Update one test for wrt-rtcoremanu-android-tests
[behavior] Update behavior app version info
Merge pull request #1504 from kangxu/kangxu/behavior/updateVersion

[behavior] Update behavior app version info
[webapi][xwalk-3179] Decrease timeout of AlarmRelative_getRemainingSeconds_return_null

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 1, fail 0, block 0
Merge pull request #1506 from haoxli/webapi/xwalk-3179

[webapi][xwalk-3179] Decrease timeout of AlarmRelative_getRemainingSeconds_return_null