Revert "vold: mount ext4 with forced SELinux context"

This reverts commit d5f62d4d78ff5b81512f183df3329cc45f39d19e.

Conflicts:
	Ext4.cpp
Revert "vold: force SELinux context only for sdcard"

This reverts commit a1ad0dc72f40e7448a58b802fac57f8938fd4027.

Conflicts:
	Ext4.cpp
Revert "vold: pass selinux context to ext4 mount (remount ro)"

This reverts commit c442d3753d48cedd3cdd51215b93f107d375a02d.
Merge branch 'kitkat' of https://github.com/J-Team/platform_system_vold into kitkat
Revert "Convert all selinux_android_restorecon and _setfilecon calls to new API."

This reverts commit f27bd09c13a610460f3157500e1b116d9a016c11.
Revert "Add SELinux restorecon calls on ASEC containers."

This reverts commit da009902ea7e40c18f73763a6e6e7d86950fd4bf.