Revert "Update kernel to builds 12934375"

This reverts commit cd036a4d92a370de15b7be303e8cca2e8d9f3c9b.

Reason for revert: <Reason for revert: Dorid monitor: Likely culprit for b/391039257  - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.>

Change-Id: Ib272b0bcb430bbad45abcbed4fba2064af908069
diff --git a/guest/kernel/android15-6.6/arm64/prebuilt-info.txt b/guest/kernel/android15-6.6/arm64/prebuilt-info.txt
index 8755c94..4a5820d 100644
--- a/guest/kernel/android15-6.6/arm64/prebuilt-info.txt
+++ b/guest/kernel/android15-6.6/arm64/prebuilt-info.txt
@@ -1,3 +1,3 @@
 {
-    "kernel-build-id": "12934375"
+    "kernel-build-id": "12570979"
 }