rollback git ignore

Author: yeyian

.gitignore

@@ -9,5 +9,3 @@ client/node_modules/
 client/packages/lowcoder-plugin-demo/.yarn/install-state.gz
 client/packages/lowcoder-plugin-demo/yarn.lock
 client/packages/lowcoder-plugin-demo/.yarn/cache/@types-node-npm-16.18.68-56f72825c0-094ae9ed80.zip
-server/yarn.lock
-server/node-service/yarn.lock