def remove_environment_variable(self, *names):
        """Deletes the specified environment variable.

        Does nothing if the environment variable is not set.

        Starting from Robot Framework 2.7, it is possible to remove multiple
        variables by passing them to this keyword as separate arguments.
        """
        for name in names:
            value = del_env_var(name)
            if value:
                self._info("Environment variable '%s' deleted" % name)
            else:
                self._info("Environment variable '%s' does not exist" % name)
dataset/ETHPy150Open shellderp/sublime-robot-plugin/lib/robot/libraries/OperatingSystem.py/OperatingSystem.remove_environment_variable/original