Remove duplicate function

Author: WaVEV

django_mongodb_backend/indexes.py

@@ -1,4 +1,3 @@
-from collections import defaultdict
 import itertools
 from collections import defaultdict
 
@@ -109,52 +108,6 @@ def where_node_idx(self, compiler, connection):
     return mql
 
 
-def get_pymongo_index_model(
-    self,
-    model,
-    schema_editor,
-    *,
-    field=None,
-    unique=False,
-    column_prefix="",
-):
-    if self.contains_expressions:
-        return None
-    kwargs = {}
-    filter_expression = defaultdict(dict)
-    if self.condition:
-        filter_expression.update(self._get_condition_mql(model, schema_editor))
-    if unique:
-        kwargs["unique"] = True
-        # Indexing on $type matches the value of most SQL databases by
-        # allowing multiple null values for the unique constraint.
-        if field:
-            column = column_prefix + field.column
-            filter_expression[column].update({"$type": field.db_type(schema_editor.connection)})
-        else:
-            for field_name, _ in self.fields_orders:
-                field_ = model._meta.get_field(field_name)
-                filter_expression[field_.column].update(
-                    {"$type": field_.db_type(schema_editor.connection)}
-                )
-    if filter_expression:
-        kwargs["partialFilterExpression"] = filter_expression
-    index_orders = (
-        [(column_prefix + field.column, ASCENDING)]
-        if field
-        else [
-            # order is "" if ASCENDING or "DESC" if DESCENDING (see
-            # django.db.models.indexes.Index.fields_orders).
-            (
-                column_prefix + model._meta.get_field(field_name).column,
-                ASCENDING if order == "" else DESCENDING,
-            )
-            for field_name, order in self.fields_orders
-        ]
-    )
-    return IndexModel(index_orders, name=self.name, **kwargs)
-
-
 class SearchIndex(Index):
     suffix = "search"