Revert "defconfig: Various optimizations"

This reverts commit 150fb827ec28291030d9038a038b6e4100bb0196.
defconfig: Various optimizations (Attempt 2)
 - Disable unused ramdisk compression formats
 - Enable "Optimize very unlikely/likely branches"
 - Set default IO scheduler to noop
 - Reduce preemption from "Low-latency desktop" to "Desktop"
 - Disable Samsungs Rooting Restriction