code: def unregister(self):
          
  
          for k in list(env.keys()):
              if k.startswith(self.env_prefix):
                  del env[k]
  
          try:
              del all_satchels[self.name.upper()]
          except KeyError:
              pass
  
          try:
              del manifest_recorder[self.name]
          except KeyError:
              pass
  
          try:
              del manifest_deployers[self.name.upper()]
          except KeyError:
              pass
  
          try:
              del manifest_deployers_befores[self.name.upper()]
          except KeyError:
              pass
  
          try:
              del required_system_packages[self.name.upper()]
          except KeyError:
              pass
docs: Removes this satchel from global registeries.