[Tizen] No need to show crosswalk icon
The icon of crosswalk is shown on ivi-ux-ico which is not correct.
This fix modifies the crosswalk config file to not show its icon by default.

BUT=TC-1708
Merge pull request #2497 from yejingfu/bug-fix

[Tizen] No need to show crosswalk icon on ivi-ux-ico