[webapi][XWALK-3118] Delete the excess character '\'

Remove the invalid charcter '\' from test code.
Impacted tests(approved):new 0,update 1,delete 0
Unit test platform:[android]
Unit test result summary:pass 1,fail 0,block 0
Merge pull request #1457 from chenxix/webapi/modify-color

[webapi][XWALK-3118] Delete the excess character '\'
[master][usecase][XWALK-1501] Delete URL TCs

Unit test platform: [Tizen]
Impacted TCs num(approved):New 0,Update 1,Delete 1
Test Result: pass 1, fail 0, block 0
Merge pull request #1461 from linshen/shenlin-master-ivi-remove-usecase

[master][usecase][XWALK-1501] Delete URL TCs
[stability] Update ont case

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 #1465 from wanghongjuan/stability/overload

[stability] Update ont case
[wrt][WEBQA-165] Update ge_package.py for wrt-manifest-android-tests
[wrt] Update ge_package.py due to clean redundant resources
Merge pull request #1468 from wanghongjuan/wrt/manifest-arm

[wrt][WEBQA-165] Update ge_package.py for wrt-manifest-android-tests
Merge pull request #1470 from wanghongjuan/wrt/packertool-package

[wrt] Update ge_package.py due to clean redundant resources