msm: ipa3: Remove references to to_uc field at filter rule

At IPAv3 there is no support for this field any more. This change
removes the references to it at the debugfs of the filtering structure.

Change-Id: Ia4686222e6054ee5018c55e58be3a160c1ced520
Signed-off-by: Ghanim Fodi <gfodi@codeaurora.org>
Signed-off-by: Amir Levy <alevy@codeaurora.org>