session and activity delete

test/drift/sendtrain/generated/schema.dart

@@ -7,6 +7,8 @@ import 'schema_v1.dart' as v1;
 import 'schema_v2.dart' as v2;
 import 'schema_v3.dart' as v3;
 import 'schema_v4.dart' as v4;
+import 'schema_v5.dart' as v5;
+import 'schema_v6.dart' as v6;
 
 class GeneratedHelper implements SchemaInstantiationHelper {
   @override
@@ -20,10 +22,14 @@ class GeneratedHelper implements SchemaInstantiationHelper {
         return v3.DatabaseAtV3(db);
       case 4:
         return v4.DatabaseAtV4(db);
+      case 5:
+        return v5.DatabaseAtV5(db);
+      case 6:
+        return v6.DatabaseAtV6(db);
       default:
         throw MissingSchemaException(version, versions);
     }
   }
 
-  static const versions = const [1, 2, 3, 4];
+  static const versions = const [1, 2, 3, 4, 5, 6];
 }