squash:remove job_owner part in this patch

Author: skycastlelily

tmt/steps/provision/mrack.py

@@ -897,8 +897,6 @@ def to_mrack(self) -> dict[str, Any]:
             data['beaker']['ks_append'] = self.kickstart
             data['beaker']['kernel_options'] = self.kickstart.get('kernel_options')
             data['beaker']['kernel_options_post'] = self.kickstart.get('kernel_options_post')
-        if self.beaker_job_owner:
-            data['beaker']['beaker_job_owner'] = self.beaker_job_owner
 
         return data