Remove Ponos from CE

Based on !2227 (merged)

TODO:

• Remove & update tests

arkindex/process/builder.py

@@ -213,8 +213,6 @@ class ProcessBuilder(object):
         """
         from arkindex.process.models import ActivityState, ProcessMode
 
-        if not self.process.farm_id:
-            raise ValidationError("Process must have a farm ID to be built")
         if self.run > 0 and not self.process.is_final:
             raise ValidationError("Cannot run a process that is not in a final state.")
         if self.process.mode in (ProcessMode.Local, ProcessMode.Template):