MEDIUM: connection: don't test for CO_FL_WAKE_DATA

This flag is always set when we end up here, for each and every data
layer (idle, stream-interface, checks), and continuing to test it
leaves a big risk of forgetting to set it as happened once already
before 1.5-dev13.

It could make sense to backport this into stable branches as part of
the connection flag fixes, after some cool down period.
1 file changed