Don't copy system/sbin/adbd to recovery

adbd for recovery partition is built separately. No need to copy.
Instead, the recovery version adbd.recovery is added to
PRODUCT_PACKAGES.

Bug: 79146551
Test: m -j
Test: adb reboot recovery; adb devices
Change-Id: I7f0ee8b21cbafc0ab5a4eb1f9c8ee70774617013