Revert changes to main init.rc file

Move these to the CM init, there's no need to have them here.

Revert "rootdir: Set permissions for additional interactive sysfs nodes"

This reverts commit d4a936e3.

Revert "init: provide initial pemissions for ondemand governor"

This reverts commit bb23f09b.

Revert "Allow 'system' user to modify cpufreq control files"

This reverts commit 2aaa54be.

Change-Id: I8889d6f6d3346cf7920bb3e8d5d52291d40d6b5e