Can't unmap "Numpad 5"

[=X51=VC_]

I'm trying to optimise my controls and worked out a scheme to map my numpad as an engine management area. However, when I map Numpad 5 it warns me that this is also used for "inpcam_rotate_gopro_yaw_center". I have no idea what that is, I looked everywhere for it and can't find it. I know Numpad 5 is the default for centering in VR but I unmapped that already and use a different button for it. Thing is, playing in VR, Numpad 5 STILL centers the view to where I'm looking even though it's not mapped anywhere to do this (it's currently an oil cooler control which is irritating to say the least). Any ideas how I can get rid of this mapping?

[56RAF_Roblex]

The BOS manual states that the NP 5 key is reserved for centering your view and in the section about creating a custom snap view it says you can remap any NP key except NP-5

[=X51=VC_]

Hmm that's inconvenient. Can it not be modified in the game files or is that risky?