make pandas an optional dependency in lancedb as well (#385)

python/lancedb/db.py

@@ -16,9 +16,8 @@ from __future__ import annotations
 import os
 from abc import ABC, abstractmethod
 from pathlib import Path
-from typing import Dict, Iterable, List, Optional, Tuple, Union
+from typing import Optional
 
-import pandas as pd
 import pyarrow as pa
 from pyarrow import fs
 
@@ -39,9 +38,7 @@ class DBConnection(ABC):
     def create_table(
         self,
         name: str,
-        data: Optional[
-            Union[List[dict], dict, pd.DataFrame, pa.Table, Iterable[pa.RecordBatch]],
-        ] = None,
+        data: Optional[DATA] = None,
         schema: Optional[pa.Schema] = None,
         mode: str = "create",
         on_bad_vectors: str = "error",