Why Won't Deleting vimrc Reset Vim Settings? (Mac)

I reinstalled Macvim using Homebrew, deleted and reinstalled both the vim folder at /usr/shared/vim and vimrc.

When I open text files with vim the settings are the same and any changes I make to the new vimrc file have no effect. Does Macvim initialize settings from a different file? I'm running macOS Sierra 10.12.6. I'm running version 8.1 for vim. Thanks in advance!

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