To remove a file from the Git repository but not delete it from your filesystem, execute the following:
git rm --cached file_to_keep.txt; git commit -m "Removing file_to_keep.txt from Repository";
To remove a file from the Git repository and the filesystem, use the following:
git rm file_to_delete.txt; git commit -m "Removing and Deleting file_to_delete.txt";
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