schema: remove unused function

cubedash/summary/_schema.py

@@ -70,34 +70,6 @@ def pg_create_index(
     )
 
 
-def pg_index_exists(conn, schema_name: str, table_name: str, index_name: str) -> bool:
-    """
-    Does a postgres index exist?
-
-    Unlike pg_exists(), we don't need heightened permissions on the table.
-
-    So, for example, Explorer's limited-permission user can check agdc/ODC tables
-    that it doesn't own.
-    """
-    return (
-        conn.execute(
-            text("""
-                select indexname
-                from pg_indexes
-                where schemaname=:schema_name and
-                    tablename=:table_name and
-                    indexname=:index_name
-              """),
-            {
-                "schema_name": schema_name,
-                "table_name": table_name,
-                "index_name": index_name,
-            },
-        ).scalar()
-        is not None
-    )
-
-
 def get_postgis_versions(conn) -> str:
     """What versions of Postgis, Postgres and libs do we have?"""
     return conn.execute(select(func.postgis_full_version())).scalar()

cubedash/summary/_stores.py

@@ -11,7 +11,6 @@
 from uuid import UUID
 from zoneinfo import ZoneInfo
 
-import dateutil.parser
 import structlog
 from cachetools.func import ttl_cache
 from dateutil import tz
@@ -1527,13 +1526,6 @@ def get_dataset_footprint_region(self, dataset_id: UUID):
         return (to_shape(footprint) if footprint is not None else None, row.region_code)
 
 
-def _safe_read_date(d):
-    if d:
-        return _utils.default_utc(dateutil.parser.parse(d))
-
-    return None
-
-
 def _summary_from_row(
     res: RowMapping,
     product_name: str,