Revert :Launch SuperSU from Settings

If SuperSU is installed, show an entry in Settings below
"Developer options", which launches SuperSU when tapped.
At boot time SuperSU will detect if com.android.settings
contains the resources from this patch, and if so it
will hide itself from the launcher. This was implemented
in v1.85, so we only show the entry if the installed
SuperSU version is at least that.

Change-Id: I2af95a1a4396101ff87448cd0ae20addf235af52 (reverted from commit 802b00cd2cdaa278815ae6bc9c087050221f2dfe)