Don't special case for Engine

Author: mroeschke

pandas/tests/io/test_sql.py

@@ -251,7 +251,6 @@ def create_and_load_postgres_datetz(conn):
         Table,
         insert,
     )
-    from sqlalchemy.engine import Engine
 
     metadata = MetaData()
     datetz = Table("datetz", metadata, Column("DateColWithTz", DateTime(timezone=True)))
@@ -264,17 +263,10 @@ def create_and_load_postgres_datetz(conn):
         },
     ]
     stmt = insert(datetz).values(datetz_data)
-    if isinstance(conn, Engine):
-        with conn.connect() as conn:
-            with conn.begin():
-                datetz.drop(conn, checkfirst=True)
-                datetz.create(bind=conn)
-                conn.execute(stmt)
-    else:
-        with conn.begin():
-            datetz.drop(conn, checkfirst=True)
-            datetz.create(bind=conn)
-            conn.execute(stmt)
+    with conn.begin():
+        datetz.drop(conn, checkfirst=True)
+        datetz.create(bind=conn)
+        conn.execute(stmt)
 
     # "2000-01-01 00:00:00-08:00" should convert to
     # "2000-01-01 08:00:00"