chore: remove sl_ tables (#28704)

superset/daos/datasource.py

@@ -22,23 +22,19 @@
 from superset.connectors.sqla.models import SqlaTable
 from superset.daos.base import BaseDAO
 from superset.daos.exceptions import DatasourceNotFound, DatasourceTypeNotSupportedError
-from superset.datasets.models import Dataset
 from superset.models.sql_lab import Query, SavedQuery
-from superset.tables.models import Table
 from superset.utils.core import DatasourceType
 
 logger = logging.getLogger(__name__)
 
-Datasource = Union[Dataset, SqlaTable, Table, Query, SavedQuery]
+Datasource = Union[SqlaTable, Query, SavedQuery]
 
 
 class DatasourceDAO(BaseDAO[Datasource]):
     sources: dict[Union[DatasourceType, str], type[Datasource]] = {
         DatasourceType.TABLE: SqlaTable,
         DatasourceType.QUERY: Query,
         DatasourceType.SAVEDQUERY: SavedQuery,
-        DatasourceType.DATASET: Dataset,
-        DatasourceType.SLTABLE: Table,
     }
 
     @classmethod

superset/datasets/schemas.py

@@ -21,9 +21,7 @@
 from flask_babel import lazy_gettext as _
 from marshmallow import fields, pre_load, Schema, ValidationError
 from marshmallow.validate import Length
-from marshmallow_sqlalchemy import SQLAlchemyAutoSchema
 
-from superset.datasets.models import Dataset
 from superset.exceptions import SupersetMarshmallowValidationError
 from superset.utils import json
 
@@ -291,17 +289,6 @@ class GetOrCreateDatasetSchema(Schema):
     always_filter_main_dttm = fields.Boolean(load_default=False)
 
 
-class DatasetSchema(SQLAlchemyAutoSchema):
-    """
-    Schema for the ``Dataset`` model.
-    """
-
-    class Meta:  # pylint: disable=too-few-public-methods
-        model = Dataset
-        load_instance = True
-        include_relationships = True
-
-
 class DatasetCacheWarmUpRequestSchema(Schema):
     db_name = fields.String(
         required=True,