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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def remove_project(self, project_id):
 """ Removes a Project instance from the list of projects in use. :param project_id: Project identifier """


        if project_id not in self._projects:
            raise aiohttp.web.HTTPNotFound(text="Project ID {} doesn't exist".format(project_id))
        del self._projects[project_id]