bts/osmo-bts.cfg: use default {fn,rts}-advance values

It's better if we run ttcn3-bts-test with the default values, given
that they were significantly reduced some time ago.

Change-Id: Id97e848e5dfd0b6c504d06f62642511cfd5a0f66
Related: I7da3d0948f38e12342fb714b29f8edc5e9d0933d (osmo-bts)
Related: OS#4487
1 file changed