[React] netlify submodules 오류 해결

https://answers.netlify.com/t/error-checking-out-submodules-fatal-no-url-found-for-submodule-path-website-in-gitmodules/16435

Error checking out submodules: fatal: No url found for submodule path 'website' in .gitmodules

 
https://tkim.info/ko/devnote/d061-%EC%9E%98%EB%AA%BB%EB%90%9C-submodule-path%EA%B0%80-.git%EC%97%90-%EB%82%A8%EC%95%84%EC%9E%88%EC%9D%84-%EB%95%8C-%EC%82%AD%EC%A0%9C%ED%95%98%EB%8A%94-%EB%B0%A9%EB%B2%95/

d061 잘못된 submodule path가 .git에 남아있을 때, 삭제하는 방법