Remove few Kaminario release notes

Since Kaminario drivers were added only in Newton, some of
the Kaminario release notes are not required.

Change-Id: I7e49d8dbeaf1964e24ccda08953ad086348c5e25

releasenotes/notes/deprecated-kaminario_nodedup_substring-659a47acea97ef5a.yaml

@@ -1,5 +0,0 @@
----
-deprecations:
-  - Deprecated Kaminario iSCSI and FC Cinder drivers 'kaminario_nodedup_substring'
-    option in favour of 'kaminario:thin_prov_type' in extra-specs.
-

releasenotes/notes/kaminario-cinder-driver-15f2208655590d0a.yaml

@@ -1,4 +0,0 @@
----
-features:
-  - Add manage/unmanage and extra-specs feature in Kaminario iSCSI and FC Cinder drivers.
-

releasenotes/notes/kaminario-cinder-driver-435faa025b2f6df4.yaml

@@ -1,4 +0,0 @@
----
-features:
-  - Add replication feature in Kaminario iSCSI and FC Cinder drivers.
-

releasenotes/notes/kaminario-cinder-driver-ac522bc73e27faad.yaml

@@ -1,4 +0,0 @@
----
-features:
-  - Add retype feature in Kaminario iSCSI and FC Cinder drivers.
-

releasenotes/notes/kaminario-cinder-driver-bug-1612602-8209c921e59d9dda.yaml

@@ -1,7 +0,0 @@
----
-fixes:
-  - Fixed _delete_volume_replica and _get_replica_status in
-    Kaminario K2 iSCSI and FC Cinder drivers with different source
-    and target K2 arrays while testing replication.
-    Removed hard-coding of RPO and fixed volume_type.name issue.
-

releasenotes/notes/kaminario-cinder-driver-bug-1616329-c91bb4e747d14f3b.yaml

@@ -1,6 +0,0 @@
----
-fixes:
-  - Fixed retyping 'dedup volume without replication' <->
-    'nodedup volume without replication' after replication failback and
-    removing replication for a replicated volume in Kaminario iSCSI and
-    FC Cinder Drivers.

releasenotes/notes/kaminario-cinder-driver-bug-1620781-821d16f5f7f2932f.yaml

@@ -1,5 +0,0 @@
----
-fixes:
-  - Fixed orphan view and multipath devices when creating a volume from a
-    snapshot or cloning in the Kaminario iSCSI and FC Cinder Drivers.
-

releasenotes/notes/kaminario-concurrency-bug-e0b899a42383660c.yaml

@@ -1,6 +0,0 @@
----
-fixes:
-  - Fixed concurrency issue in K2 iSCSI and FC Cinder drivers
-    due to possible race conditions between attach and detach
-    volumes and due to limitation from Kaminario K2 iSCSI and
-    FC arrays on concurrent operations.

releasenotes/notes/kaminario-failback-support-072295f8d13589d3.yaml

@@ -1,4 +0,0 @@
----
-fixes:
-  - Added missing replication failback support in Kaminario iSCSI and
-    FC Cinder drivers.

releasenotes/notes/kaminario-snapshot-auto-delete-ff789c57fa34a7a0.yaml

@@ -1,6 +0,0 @@
----
-fixes:
-  - Add "is_auto_deleteable=False" to the snapshot properties
-    in Kaminario K2 iSCSI and FC Cinder drivers, in order to
-    avoid auto deleting the snapshot.
-