Clean up imports in transform.py

Removed unused imports from transform.py

Author: arshitas

app/etl/transform.py

@@ -1,7 +1,5 @@
 import pandas as pd
-from datetime import datetime
 # TODO (Find & Fix)
-from typing import Optional
 
 def transform(df: pd.DataFrame) -> pd.DataFrame:
     """
@@ -51,4 +49,4 @@ def transform(df: pd.DataFrame) -> pd.DataFrame:
         pass
 
     # TODO (Find & Fix): Text columns are not cleaned (strip, lowercase)
-    return df_transformed
+    return df_transformed