Clear out contributors folder

[jlord]

The contributors folder is biiiiiiiiiig. It makes the repo big and hard to find files in. This PR removes all except for the last 40 files.

Also every now and again a file comes in from a different operating system which messes up capitalization when it is cloned down onto another operating system. It then shows up as a change and added to the persons commit when it shouldn't be. I'll need to do a more permanent fix but am hoping this also helps as not as many will be affected when one of those files gets in.

Just a note, @reporobot adds each person who has finished it to a json file and keeps track of it that way so really files in the /contributors don't matter after the PR is made 😉

Closes #9754

[reporobot]

Hello! The name of the branch with this Pull Request is not of the add-USERNAME pattern so I'm skipping reviewing it for the Git-it challenges.
If you are completing the Git-it challenges, you'll need to close this Pull Request, rename your branch, push it to your fork of Patchwork on GitHub and then start a new Pull Request. Here's how to rename a branch and push it to GitHub from terminal:

$ git branch -m add-USERNAME
$ git push origin add-USERNAME

[reporobot]

Hello! The name of the branch with this Pull Request is not of the add-USERNAME pattern so I'm skipping reviewing it for the Git-it challenges.
If you are completing the Git-it challenges, you'll need to close this Pull Request, rename your branch, push it to your fork of Patchwork on GitHub and then start a new Pull Request. Here's how to rename a branch and push it to GitHub from terminal:

$ git branch -m add-USERNAME
$ git push origin add-USERNAME