code: def remove_distribution(self, dist):
          
          logger.debug('removing distribution %s', dist)
          name = dist.key
          del self.dists_by_name[name]
          del self.dists[(name, dist.version)]
          for p in dist.provides:
              name, version = parse_name_and_version(p)
              logger.debug('Remove from provided: %s, %s, %s', name, version, dist)
              s = self.provided[name]
              s.remove((version, dist))
              if not s:
                  del self.provided[name]
docs: Remove a distribution from the finder. This will update internal
          information about who provides what.
          :param dist: The distribution to remove.