delete files in the github repositories

Step 1: Clone github repository
      git clone repositoryURL
Step 2: Switch branch
      git checkout -b <branch> --track <remote>/<branch>
      To view <remote>/<branch> use command: git branch -r

Step 3: Delete the files

Step 4: Add the files

      git add .

Step 5: Stage the code 

      git commit -m "some comments here"

Step 4: push to github repository

      git push origin local_branch

      git push origin master