Open Chrome explore.
2 - Click “Customize and control Google Chrome” in the right-top of the page and click "Setting".
3 - Click “Set pages” link of "On startup" ->delete omiga-plus homepage link ->click “OK”.
4 - Click "Change" link of "Apperance" -> delete omiga-plus homepage link -> click "OK".
4 - Click “Manage search engines”->delete omiga-plus,then click “OK”.
5 - Restart Chrome explore.