Merge "Delete update_54_kernel.sh" am: 42698a6280

Original change: https://android-review.googlesource.com/c/platform/prebuilts/qemu-kernel/+/1532758

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ib3d3d3e28332a8069915fe0f361e5f5c4d37746b