[wrt]update 2 tcs to designed

[Detailed commit message (if have)]
Impacted TCs num(designed): New 0, update 0, deleted 2
Unit test platform: [tizen]
update tests.xml to delete 2 tcs ,no need UT.
Merge pull request #1046 from linshen/shenlin/update-tct-pm-wrt-to-designed

[wrt]update 2 tcs to designed
[usecase][XWALK-443] Update package wgt path to resolve

- Floder tests change to samples, so tizen.filesystem.resolve path need to update

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI] crosswalk-10.38.222, t-e-c 0.106
Unit test result summary: pass 0, fail 1, block 0
Merge pull request #1048 from xinliux/xinliux/usecase/XWALk-443

[usecase][XWALK-443] Update package wgt path to resolve
[wrt][XWALK-1670]Add WebRTC testcase
[Detailed commit message (if have)]
Impacted TCs num(designed): New 10, update 0, deleted 0
Unit test platform: [tizen]
Merge pull request #1042 from linshen/shenlin/update/XWALK-1670-WebRTC

[wrt][XWALK-1670]Add WebRTC testcase