Revert "4.3 detection fix"

This reverts commit 04f02c55ed014ef91c0e201bf058a19eeea7db99.
Revert "unset immutable bit on install-recovery.sh"

This reverts commit 37566e298672adab0370f24dfe5d108053df0f71.
Revert "add su daemon runner"

This reverts commit a2aac8378215633a32966966f518077529e994c4.
Revert "su installation and detection updates for 4.3"

This reverts commit 912b6d90464adc7065302b33e6fe616771cc5180.
Revert "Fixes for Superuser"

This reverts commit ebecbc657e3b8f73f112613a3dfe2eef3078c219.
recovery: we don't need koush su