Revert "ARM: EXYNOS: Enforce full regulator constraints"

This reverts commit 526c7eed524d506f9225796de7ca512305f19b55.
Revert "i9500: configs: Update after enabling HRTICK"

This reverts commit 91431abad49b93c4d5c8603cfa29ec2dc1baa049.
Revert "arm: Kconfig: Add SCHED_HRTICK"

This reverts commit 5b0f55634fd724c70215ade891bff5647eca4761.