To removing a Gmail account from iOS, you are supposed to follow and apply few important instructions. First of all, you must open your iPhone or iPad, and then open your Gmail app and then select menu and then you should tap the account which is signed in manage accounts edit and then just next to the account that you would like to remove, you are supposed to tap on remove button and then you can simply confirm your choice if asked and then move towards the left and then you must select done button. By applying the steps you can simply fix your issues.