[automerger skipped] Remove sdkextension sdk definition am: 22be329e4e am: dbc53fb401 -s ours am: c23056910a -s ours am: b265b4d38a -s ours

am skip reason: Change-Id I284a4cd5700626305275ab43ca55086c245a14ec with SHA-1 748a45564d is in history

Original change: https://android-review.googlesource.com/c/platform/packages/modules/SdkExtensions/+/1351449

Change-Id: Iada9ce42075c0bf0f1ca4e27a4f78ae7805e121e