fix DLGSUP logging cat after change in libosmocore

DLGSUP must no longer be added to applications' logging category arrays after
change-id Id974c7be158e4d60421a98110f5c807aefd31119 in libosmocore.

Todo: once above change is merged to libosmocore, bump the required libosmocore
version in configure.ac.

Change-Id: I74ab1a031d1ed144468b016294d2965eba5e7d1d
1 file changed