[Lollipop] No Gsm Service topic

To all the developers out there i was wondering may be you guys have enough knowledge about this..

i have installed titanium backup pro in my rooted note 3 please tell me which apk's or which services i should remove so that i get the following:
1. No search for gsm [its keep searching for network even after i tried flight mode i am really annoyed by this i want to typically remove it from my rom so it stop searching for cellular network]
2. I only want wifi no cellular services [don't want to recieve or make call in the device]