ttcn3.sh: don't build virtphy/trxcon/fake_trx

Remove leftovers from before refactoring in
Iecba5391dafc353058d369deb513b156534face1. No need to build these with
osmo-dev, as they are part of the osmocom-bb docker container that gets
built via ttcn3-bts-test/jenkins.sh.

Change-Id: I99ec4ff9caf34d1ddd7efde2f5ae2342a6984689
1 file changed