Restore default button in settings, when clicked shows warning once

[neeraj3029]

Fixes #461

Checklist

• [x] I have read the Contribution & Best practices Guide and my PR follows them.
• [x] My branch is up-to-date with the Upstream master branch.
• [ ] The unit tests pass locally with my changes
• [ ] I have added tests that prove my fix is effective or that my feature works
• [ ] I have added necessary documentation (if appropriate)
• [ ] All the functions created/modified in this PR contain relevant docstrings.

Short description of what this resolves:

Restore default button in settings, when clicked shows warning once, instead of twice which was because of duplicate code present in options.js file.