[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