fix output of subsequent calls for ``environ.setenv`` state

Previously ``setenv`` function (from ``modules.environ``) was
called even if the environment was already in a proper state.
This caused ``highstate`` to always report changes to be applied
even if they were not required.
remove the leftovers from the previous file
Merge pull request #18293 from slafs/env-change-fix

fix output of subsequent calls for ``environ.setenv`` state