Revert "cmdeploy/dovecot/dovecot.conf.j2: tweak idle/hibernate metrics"

This reverts commit bfcfc9b.

Author: missytake

cmdeploy/src/cmdeploy/dovecot/dovecot.conf.j2

@@ -326,20 +326,11 @@ metric imap_idle_duration {
   group_by = duration:exponential:5:11:10
 }
 
-metric imap_idle_commands {
-  filter = event=imap_command_finished AND cmd_name=IDLE
-  group_by = tagged_reply_state
-}
-
-metric imap_idle_failed {
-  filter = event=imap_command_finished AND cmd_name=IDLE AND tagged_reply_state!=OK
-}
-
 # Hibernation Metrics (requires imap_hibernate_timeout to be set)
 metric imap_hibernated {
   filter = event=imap_client_hibernated
   # error field present = failure
-  # group_by = mailbox
+  group_by = mailbox
 }
 
 metric imap_hibernated_failed {
@@ -349,18 +340,7 @@ metric imap_hibernated_failed {
 metric imap_unhibernated {
   filter = event=imap_client_unhibernated
   fields = hibernation_usecs
-#  group_by = reason
-}
-
-metric imap_unhibernated_reason {
-  filter = event=imap_client_unhibernated
   group_by = reason
-  fields = hibernation_usecs
-}
-
-metric imap_unhibernated_reason_sleep {
-  filter = event=imap_client_unhibernated
-  group_by = reason hibernation_usecs:exponential:4:8:10
 }
 
 metric imap_unhibernated_failed {