OCPBUGS-27841: Removed adding storage class proc

Author: sr1kar99

storage/persistent_storage/persistent_storage_local/persistent-storage-using-lvms.adoc

@@ -69,9 +69,6 @@ include::modules/lvms-unsupported-devices.adoc[leveloffset=+2]
 
 * xref:../../../storage/persistent_storage/persistent_storage_local/persistent-storage-using-lvms.adoc#lvms-reference-file_logical-volume-manager-storage[{lvms} reference YAML file]
 
-//Adding a storage class
-include::modules/lvms-adding-a-storage-class.adoc[leveloffset=+1]
-
 //Provisioning
 include::modules/lvms-provisioning-storage-using-logical-volume-manager-operator.adoc[leveloffset=+1]