Revert "hw-error: introduce bmc quiesce state"

This reverts commit 9f80622954ddea806822af6fa69970f3ce8ad781.

There was a design direction change within this doc:
https://gerrit.openbmc-project.xyz/c/openbmc/docs/+/29603

No more BMC Quiesce

Change-Id: I3bbee2738dea43525518fea17b7cfe59dcc421ba
diff --git a/xyz/openbmc_project/State/BMC.interface.yaml b/xyz/openbmc_project/State/BMC.interface.yaml
index 1b61da7..76e5fdc 100644
--- a/xyz/openbmc_project/State/BMC.interface.yaml
+++ b/xyz/openbmc_project/State/BMC.interface.yaml
@@ -49,8 +49,3 @@
            UpdateInProgress implies BMC is in firmware update mode. CurrentBMCState
            will be set to "UpdateInProgress" while starting image download and
            reset to Ready, once activation is done or error case during update process.
-       - name: 'Quiesced'
-         description: >
-           Quiesced implies an event has occurred on the system requiring
-           attention by the operator. Review phosphor-logging event logs for
-           the cause.