Solution: Goto settings in your LYF mobile select Accounts and then select Google account it will display the accounts already added. Select the account the you want to remove.It will show you the account with app data,calender and some options. Above that one three dot will be shown.If you click that it will show you two options.One is sync now and another one is remove account select remove account it will be removed..Enjoy... Settings -> Accounts -> google accounts -> select the account -> remove account