regulator: tps6524x: Remove redundant spi_set_drvdata

Driver core sets driver data to NULL upon failure or remove.
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Signed-off-by: NMark Brown <broonie@linaro.org>

drivers/regulator/tps6524x-regulator.c

@@ -588,7 +588,6 @@ static int pmic_remove(struct spi_device *spi)
 		regulator_unregister(hw->rdev[i]);
 		hw->rdev[i] = NULL;
 	}
-	spi_set_drvdata(spi, NULL);
 	return 0;
 }