[Q] Permanent Disable airplane mode option in Custom ROM topic

I'm working on permanently disabling airplane mode in a slightly customized ROM I'm working on. Essentially, I want nothing to change when a user clicks the airplane mode button.

This is on the Verizon Galaxy Tab 2 (sch-i705).

I'm hoping for a simple solution (i.e. deleting some module) that will disable the functionality behind airplane mode or adjust which radios toggle when airplane mode is enabled.

I'm not sure where to start - right now I'm slogging through an upacked system.img with no success, and haven't found anything in my xda/google searches. Ideas of what files I could remove or modify?

Permanent smudging (spot) on the glass topic

Device #1)

I just got my S4 and it appears there is smudging around the home button, where my thumb presses it. I don't use a screen protector but this has nothing to do with that. It is like a grease spot that doesn't come off. Anyone have this before? Should I return it?

** I went to the Sprint store (within my 14 days) and they exchanged my device. **

Device #2)

I am kind of worried this is going to happen again. Has anyone seen this before?