remove explicit type checking, string literals around forward annotations

Signed-off-by: varun-edachali-dbx <varun.edachali@databricks.com>

Author: varun-edachali-dbx

src/databricks/sql/backend/filters.py

@@ -11,14 +11,12 @@
     Any,
     Callable,
     cast,
-    TYPE_CHECKING,
 )
 
 from databricks.sql.backend.sea.backend import SeaDatabricksClient
 from databricks.sql.backend.types import ExecuteResponse
 
-if TYPE_CHECKING:
-    from databricks.sql.result_set import ResultSet, SeaResultSet
+from databricks.sql.result_set import ResultSet, SeaResultSet
 
 logger = logging.getLogger(__name__)
 
@@ -30,8 +28,8 @@ class ResultSetFilter:
 
     @staticmethod
     def _filter_sea_result_set(
-        result_set: "SeaResultSet", filter_func: Callable[[List[Any]], bool]
-    ) -> "SeaResultSet":
+        result_set: SeaResultSet, filter_func: Callable[[List[Any]], bool]
+    ) -> SeaResultSet:
         """
         Filter a SEA result set using the provided filter function.
 
@@ -49,9 +47,6 @@ def _filter_sea_result_set(
         # Filter rows
         filtered_rows = [row for row in all_rows if filter_func(row)]
 
-        # Import SeaResultSet here to avoid circular imports
-        from databricks.sql.result_set import SeaResultSet
-
         # Reuse the command_id from the original result set
         command_id = result_set.command_id
 
@@ -67,10 +62,13 @@ def _filter_sea_result_set(
         )
 
         # Create a new ResultData object with filtered data
+
         from databricks.sql.backend.sea.models.base import ResultData
 
         result_data = ResultData(data=filtered_rows, external_links=None)
 
+        from databricks.sql.result_set import SeaResultSet
+
         # Create a new SeaResultSet with the filtered data
         filtered_result_set = SeaResultSet(
             connection=result_set.connection,
@@ -85,11 +83,11 @@ def _filter_sea_result_set(
 
     @staticmethod
     def filter_by_column_values(
-        result_set: "ResultSet",
+        result_set: ResultSet,
         column_index: int,
         allowed_values: List[str],
         case_sensitive: bool = False,
-    ) -> "ResultSet":
+    ) -> ResultSet:
         """
         Filter a result set by values in a specific column.
 
@@ -133,8 +131,8 @@ def filter_by_column_values(
 
     @staticmethod
     def filter_tables_by_type(
-        result_set: "ResultSet", table_types: Optional[List[str]] = None
-    ) -> "ResultSet":
+        result_set: ResultSet, table_types: Optional[List[str]] = None
+    ) -> ResultSet:
         """
         Filter a result set of tables by the specified table types.