Brother Deejay, those a sound deadening rubber strips.
They are for sound deadening. If removed there is no downside other than extra noise. I am surprised that we haven't seen it done yet.
For real, Deejay! And, unless those that have more seat time than I have on the G5 say it ain't so, I suspect they can be safely removed Brothers Vince, Scoot, 120, Mark, Martyn what say you?