Remove unused constant

Constant FM_ALARM_ID_STORAGE_CEPH_FREE_SPACE was being used only in
legacy code by ceph-manager. The code was updated to remove this
unused constant and its respective alarm.

Test plan:
    PASS: Verify that no alarms are raised related to quotas.
    PASS: Confirm that no quota messages are present in the logs.

Depends-On: https://review.opendev.org/c/starlingx/config/+/827545
Depends-On: https://review.opendev.org/c/starlingx/utilities/+/820933

Closes-Bug: 1959894
Signed-off-by: Daian Cardoso Sganderlla <Daian.CardosoSganderlla@windriver.com>

Change-Id: I606d0e6dca102189a26c8cd4d587a1e772e610f0

fm-api/source/fm_api/constants.py

@@ -103,7 +103,6 @@ FM_ALARM_ID_STORAGE_CEPH_CRITICAL = ALARM_GROUP_STORAGE + ".010"
 FM_ALARM_ID_STORAGE_CEPH_MAJOR = ALARM_GROUP_STORAGE + ".011"
 FM_ALARM_ID_STORAGE_CEPH = ALARM_GROUP_STORAGE + ".001"
 FM_ALARM_ID_STORAGE_IMAGE = ALARM_GROUP_STORAGE + ".002"
-FM_ALARM_ID_STORAGE_CEPH_FREE_SPACE = ALARM_GROUP_STORAGE + ".003"
 FM_ALARM_ID_STORAGE_CINDER_IO_BUILDING = ALARM_GROUP_STORAGE + ".100"
 FM_ALARM_ID_STORAGE_CINDER_IO_LIMITING = ALARM_GROUP_STORAGE + ".101"
 # Alarm .103 is reserved for LVM thin pool metadata alarm

fm-doc/fm_doc/events.yaml

@@ -2953,25 +2953,6 @@
     Management_Affecting_Severity: none
     Degrade_Affecting_Severity: none
 
-
-800.003:
-    Type: Alarm
-    Description: |-
-        Storage Alarm Condition:
-        Quota/Space mismatch for the <tiername> tier. The sum of Ceph pool quotas does not match the tier size.
-    Entity_Instance_ID: cluster=<dist-fs-uuid>.tier=<tiername>
-    Severity: minor
-    Proposed_Repair_Action: "Update ceph storage pool quotas to use all available tier space."
-    Maintenance_Action:
-    Inhibit_Alarms:
-    Alarm_Type: operational-violation
-    Probable_Cause: configuration-out-of-date
-    Service_Affecting: False
-    Suppression: False
-    Management_Affecting_Severity: none
-    Degrade_Affecting_Severity: none
-
-
 800.100:
     Type: Alarm
     Description: |-