idmap2: remove the 'scan' command am: 6532483950 am: 29e7a4394a

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1519907

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I04d797b558efe44e763b96b01dc4870e7cc4960b