Changes

contrib: remove pysim job from jenkins.sh

The "pysim" job in jenkins.sh has the purpose to check if a change in pyosmocom
breaks some functionality in pysim. However, this check has a high risk of
creating some kind of circular dependency (chicken-egg problem) between
pyosmocom and pysim. The problem occurs when a fix/change in pyosmocom affects
the unittests-output of pysim. Then the pysim job will always fail and it is
also impossible to submit a complementary fix for pysim as well, since it will
always build against the non-fixed pyosmocom library.

So, let's remove the pysim job. In case we break functionality in pysim, we
will notice it through the nightly builds of pysim and we can take action
against the problem like we do it with all other osmocom projects.

Related: OS#6598
Change-Id: I5c625229bbfe3944521d3d835b74f20941d3922d