Merge "Retire 5.10 kernel prebuils" am: 1e891fca62

Original change: https://android-review.googlesource.com/c/platform/prebuilts/qemu-kernel/+/1576396

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I21c6a4b85a59f46da45a1b3e55de7c86d061257c