GIT: Ignore(untrack) files to be pushed to git repository

To untrack a single file that has already been added/initialized to your repository, i.e., stop tracking the file but not delete it from your system use: git rm --cached filename



This answer solved my problem:

First of all, commit all pending changes.

Then run this command:

git rm -r --cached .

This removes everything from the index, then just run:

git add .

Commit it:

git commit -m ".gitignore is now working"