msm8660: Stop messing with USB in recovery

 * Make it impossible to debug recovery, since this causes a bus reset
   when recovery is restarted.
 * Potentially causes issues with Windows.
 * Will be obsolete when the vold+recovery sexytime has climaxed.

Change-Id: I3dcdafd74bf17829ccfe62022332ecdb66612cd2
Merge branch 'cm-10.2' of github.com:CyanogenMod/android_device_samsung_msm8660-common into cm-10.2