Revert "Add SELinux filesystem relabeling to init"

This reverts commit d2d1a7ffb1f5e831ed654379496f0efe88159a66.

Revert "selinuxrelabel: Remove attempts to relabel /system"

This reverts commit cae5f245304fe11e86323aa7f6f4c25e898bf36b.

Revert "Recheck /data for selinux labeling"

This reverts commit c4dcb16ca9f51341fdd81a61fb3c00861344c030.

Revert "selinuxrelabel: Add a check for dalvik-cache"

This reverts commit c7e92306143a7b11b570ea110bc467d881a2528d.

Revert "selinuxrelabel: Need to check in priv-app now"

This reverts commit 3013c99acb51f8c2aa1156930e864cfdbcc22135.

Revert "selinux: When adding userdata labels, do cache too"

This reverts commit 8994907baf46dc1ddd78467ec57ff78639c01937.

Revert "selinux: Use a more reliable sentinel to flag /data labelling"

This reverts commit b52874de531340af02ac8e664d828dcd02d2d860.

Change-Id: I7779aaca3b0751ed74d525292681817182a0aa7f
(cherry picked from commit 58154f365c527a1cf687693bb339b3fc62b5ecc7)