Revert "bcache: add "clock" cache replacement policy"

This reverts commit 55766dbc11bf6cb8516819a45a39544b967090f3.

The interim patch has been replaced by an official commit
70bc173ce06be90b026bb00ea175567c91f006e4 bcache: reduce gc latency by processing less nodes and sleep less time

BUG=b/466158659
TEST=presubmit
RELEASE_NOTE=None

cos-patch: bug
Change-Id: I6dd97afc07e365b0e9da27c7932034ec5be8723d
Signed-off-by: He Gao <hegao@google.com>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/121927
Reviewed-by: Miri Amarilio <mirilio@google.com>
Tested-by: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Main-Branch-Verified: Cusky Presubmit Bot <presubmit@cos-infra-prod.iam.gserviceaccount.com>
Reviewed-on: https://cos-review.googlesource.com/c/third_party/kernel/+/122027
4 files changed