Instead of oldpython and python3 deps use just pythons variable.

Also the condition there should be wrapped aroud python_version_nodots and not suse version and the pythons dep should be outside the condition, rest looks fine

@TheBlackCat, @alarrosa, @aplanas, @cyberiad, @czerw, @dirkmueller, @mcepl, @mimi_vx, @pavlix, @posophe, @rjschwei, @scarabeus_iv, @sleep_walker, @tbechtold: review reminder