regulator: vqmmc-ipq4019: Remove ipq4019_regulator_remove

This driver is using devm_regulator_register() so no need to call
regulator_unregister() in ipq4019_regulator_remove().

Signed-off-by: Axel Lin <axel.lin@ingics.com>
Link: https://lore.kernel.org/r/20200114065847.31667-1-axel.lin@ingics.com


Signed-off-by: Mark Brown <broonie@kernel.org>