Revert "Update kernel to builds 12570979"

Revert submission 3323102

Reason for revert: DroidMonitor: Potential culprit for http://b/376483022 - verifying through ABTD before revert submission. This is part of the standard investigation process, and does not mean your CL will be reverted.

Reverted changes: /q/submissionid:3323102

Change-Id: I10597a1c6a77cc63cdde816403d83109acc554bb
diff --git a/guest/kernel/android15-6.6/arm64/prebuilt-info.txt b/guest/kernel/android15-6.6/arm64/prebuilt-info.txt
index 4a5820d..8c5f534 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": "12570979"
+    "kernel-build-id": "12082548"
 }