How can I delete/remove a file from git repository

If you want to delete file/folder only from git use below step:

1. First,Remove files from local repository.

   git rm -r File-Name

   or, remove files only from local repository but from filesystem

   git rm --cached File-Name

2. Secondly, Commit changes into local repository.

   git commit -m "unwanted files or some inline comments"   
   

3. Finally, update/push local changes into remote repository.

   git push 

Ref