Remove _get_rf alias

Author: jsiegle

allensdk/brain_observatory/ecephys/stimulus_analysis/receptive_field_mapping.py

@@ -198,20 +198,6 @@ def _get_rf(self, unit_id):
         """
         return self.receptive_fields['spike_counts'].sel(unit_id=unit_id).data
 
-    def get_receptive_field(self, unit_id):
-        """ Alias for _get_rf()
-
-        Parameters
-        ----------
-        unit_id : int
-            unique ID for the unit of interest
-
-        Returns
-        -------
-        receptive_field : 9 x 9 numpy array
-
-        """
-        return self._get_rf(unit_id)
 
     def _response_by_stimulus_position(self, dataset, presentations, row_key=None, column_key=None, unit_key='unit_id',
                                        time_key='time_relative_to_stimulus_onset', spike_count_key='spike_count'):