Delete .prettierignore

[luminousleek]

Summary:

Delete .prettierignore that was added at #207

Type of change:

• 🎨 Code Refactoring

Changes Made:

• Deleted .prettierignore

Proposed Commit Message:

Previously a `.prettierignore` file was added that ignored all files in
the repo. 

This caused all files not to be reformatted with prettier.

Let's delete this file so that prettier can run and can enforce a
consistent code style.

Checklist:

• I have tested my changes thoroughly.
• I have created tests for any new code files created in this PR or provided a link to a issue/PR that addresses this.
• I have added or modified code comments to improve code readability where necessary.
• I have updated the project's documentation as necessary.