Revert "Add ZYPP_LOCK_TIMEOUT=120 variable"
Revert "Add ZYPP_LOCK_TIMEOUT=120 variable"

Python SH do not transmit the variables that are behind SSH,
so the change is not fixing the original problem.  This is
still breaking the CI and needs a different solution.

This reverts commit f6ff81d1a4c3cc5817cf392dfb82259a6e7a955f.

gosipyan/automation,vmoravec/automation,vmoravec/automation,gosipyan/automation,vmoravec/automation,gosipyan/automation,aspiers/automation,aspiers/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,SUSE-Cloud/automation,aspiers/automation,SUSE-Cloud/automation,aspiers/automation,gosipyan/automation,vmoravec/automation