remove check for now-valid sequence param

tests/test_invalid_sequence_param.py

@@ -1,4 +1,4 @@
-from typing import Dict, List, Optional, Tuple
+from typing import Dict, List, Tuple
 
 import pytest
 from fastapi import FastAPI, Query
@@ -39,15 +39,3 @@ def test_invalid_dict():
         @app.get("/items/")
         def read_items(q: Dict[str, Item] = Query(default=None)):
             pass  # pragma: no cover
-
-
-def test_invalid_simple_dict():
-    with pytest.raises(AssertionError):
-        app = FastAPI()
-
-        class Item(BaseModel):
-            title: str
-
-        @app.get("/items/")
-        def read_items(q: Optional[dict] = Query(default=None)):
-            pass  # pragma: no cover