Remove Oracle storage implementation

config.ini.example

@@ -13,15 +13,6 @@ uri=redis://localhost:6379/1
 [qdrant]
 uri = http://localhost:16333
 
-[oracle]
-dsn = localhost:1521/XEPDB1
-user = your_username
-password = your_password
-config_dir = /path/to/oracle/config
-wallet_location = /path/to/wallet  # 可选
-wallet_password = your_wallet_password  # 可选
-workspace = default  # 可选,默认为default
-
 [tidb]
 host = localhost
 port = 4000