[webapi] Remove the support.js in tct-webstorage-w3c-tests

Impacted tests(approved):new 0,update 127,delete 0
Unit test platform:[Tizen IVI][Android]
Unit test result summary:pass 127,fail 0,block 0
Merge pull request #1002 from yunxiaoxie/yunxiaoxie/webstorage

[webapi] Remove the support.js in tct-webstorage-w3c-tests
[wrt-usecase][xwalk-2633] Add one usecase for wrt

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 1, Fail 0, Block 0
Merge pull request #1021 from wanghongjuan/wanghongjuan/usecase/xwalk-2633

[wrt-usecase][xwalk-2633] Add one usecase for wrt
[usecase-wrt]remove check xwalkctl install usecase

Impacted TCs num(approved): New 0, update 1, deleted 0
Unit test platform: [tizen]
Test Result: Pass 1, Fail 0
Merge pull request #1025 from linshen/shenin/remove-usecase-xwalkctl-check

[usecase-wrt]remove check xwalkctl install usecase