Here’s how you can remove an existing contact in the mIKs-it app.
Step 1: Navigating to the contact’s tab
From the home screen you can easily navigate to the contacts tab by tapping on the contacts icon as highlighted below:
Step 2: Removing a contact from the application
Once you tap on the contacts icon, you will see an overview of your contacts. Select the contact you want to delete from the contacts list. 
Once you tap on the contact you want to delete, the application will show your contact’s profile. You can then tap on the contact’s setting icon which will show contact’s action pop-up. You can then tap 'on delete contact' to remove the contact. The application will prompt you with a successful deletion message. 