Remove any unnecessary code in preparation of new design

[No767]

Summary

This PR is focused on cleaning up any unused files, imports, and others. This is done in preparation of the new design, which will need completely new code and looks.

Also migrated the logo to the public folder so it doesn't get included in the build process. And also reverted back to React 18 due to peer dep conflicts.

Types of changes

What types of changes does your code introduce to the UC Merced's ACM Chapter Website?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update (Updates to README.md, the documentation, etc)
• Other (if none of the other choices apply)

Checklist

Put an x in the boxes that apply

• If code changes were made then they have been tested.
• All workflows pass with my new changes
• [ x This PR does not address a duplicate issue or PR

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[sonarqubecloud]

Quality Gate passed

Issues
5 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud