cleanup unused code

Author: tanguyenvn

packages/plugins/nft-checkout-plugin/src/enums.ts

@@ -16,6 +16,5 @@ export const NFT_CHECKOUT_URLS: Record<NFT_CHECKOUT_BUILD_ENV_TYPE, string> = {
 
 export const MESSAGE_SETUP_COMPLETE = "setup_complete";
 export const MESSAGE_INIT = "init";
-export const MESSAGE_CONNECT = "connect";
 export const MESSAGE_SHOW_NFT_CHECKOUT = "show_nft_checkout";
 export const MESSAGE_HIDE_NFT_CHECKOUT = "hide_nft_checkout";