phy: qcom-qmp-combo: drop regulator loads

Drivers should not be specifying active-mode regulator loads unless
supporting an idle mode where the load is reduced during runtime.

This effectively reverts commit 85936d4f ("phy: qcom-qmp: add
regulator_set_load to dp phy").

Link: https://lore.kernel.org/r/YuPps+cvVAMugWmy@sirena.org.uk


Signed-off-by: Johan Hovold <johan+linaro@kernel.org>