Removes `filepaths` from `self.plugin_filepaths`.
        Recommend passing in absolute filepaths. Method will
        attempt to convert to absolute paths if not passed in.

        `filepaths` can be a single object or an iterable.

def remove_plugin_filepaths(self, filepaths):
        """
        Removes `filepaths` from `self.plugin_filepaths`.
        Recommend passing in absolute filepaths. Method will
        attempt to convert to absolute paths if not passed in.

        `filepaths` can be a single object or an iterable.
        """
        filepaths = util.to_absolute_paths(filepaths)
        self.plugin_filepaths = util.remove_from_set(self.plugin_filepaths,
                                                     filepaths)