CLN: remove obsolete MultiIndex engines

Author: toobaz

pandas/_libs/index.pyx

@@ -598,71 +598,5 @@ cpdef convert_scalar(ndarray arr, object value):
 
     return value
 
-
-cdef class MultiIndexObjectEngine(ObjectEngine):
-    """
-    provide the same interface as the MultiIndexEngine
-    but use the IndexEngine for computation
-
-    This provides good performance with samller MI's
-    """
-    def get_indexer(self, values):
-        # convert a MI to an ndarray
-        if hasattr(values, 'values'):
-            values = values.values
-        return super(MultiIndexObjectEngine, self).get_indexer(values)
-
-    cpdef get_loc(self, object val):
-
-        # convert a MI to an ndarray
-        if hasattr(val, 'values'):
-            val = val.values
-        return super(MultiIndexObjectEngine, self).get_loc(val)
-
-
-cdef class MultiIndexHashEngine(ObjectEngine):
-    """
-    Use a hashing based MultiIndex impl
-    but use the IndexEngine for computation
-
-    This provides good performance with larger MI's
-    """
-
-    def _call_monotonic(self, object mi):
-        # defer these back to the mi iteself
-        return (mi.is_monotonic_increasing,
-                mi.is_monotonic_decreasing,
-                mi.is_unique)
-
-    def get_backfill_indexer(self, other, limit=None):
-        # we coerce to ndarray-of-tuples
-        values = np.array(self._get_index_values())
-        return algos.backfill_object(values, other, limit=limit)
-
-    def get_pad_indexer(self, other, limit=None):
-        # we coerce to ndarray-of-tuples
-        values = np.array(self._get_index_values())
-        return algos.pad_object(values, other, limit=limit)
-
-    cpdef get_loc(self, object val):
-        if is_definitely_invalid_key(val):
-            raise TypeError("'{val}' is an invalid key".format(val=val))
-
-        self._ensure_mapping_populated()
-        if not self.unique:
-            return self._get_loc_duplicates(val)
-
-        try:
-            return self.mapping.get_item(val)
-        except TypeError:
-            raise KeyError(val)
-
-    def get_indexer(self, values):
-        self._ensure_mapping_populated()
-        return self.mapping.lookup(values)
-
-    cdef _make_hash_table(self, n):
-        return _hash.MultiIndexHashTable(n)
-
 # Generated from template.
 include "index_class_helper.pxi"