non-regression test: remove the --no-tcp option
non-regression test: remove the --no-tcp option

The TCP profile is now stable enough to remove the --no-tcp option of
the non-regression test.

didier-barvaux/rohc,didier-barvaux/rohc,didier-barvaux/rohc,didier-barvaux/rohc,didier-barvaux/rohc