deploy: remove obsolete storage class for caching mode

Support for `persistencyModel: cache` was removed already in 0.9.

Author: pohly

Makefile

@@ -180,7 +180,6 @@ KUSTOMIZE += $(subst kubernetes-base,kubernetes-1.19-alpha,$(subst X.XX,1.19-alp
 KUSTOMIZE += deploy/common/pmem-storageclass-default.yaml=deploy/kustomize/storageclass
 KUSTOMIZE += deploy/common/pmem-storageclass-ext4.yaml=deploy/kustomize/storageclass-ext4
 KUSTOMIZE += deploy/common/pmem-storageclass-xfs.yaml=deploy/kustomize/storageclass-xfs
-KUSTOMIZE += deploy/common/pmem-storageclass-cache.yaml=deploy/kustomize/storageclass-cache
 KUSTOMIZE += deploy/common/pmem-storageclass-late-binding.yaml=deploy/kustomize/storageclass-late-binding
 KUSTOMIZE += deploy/operator/pmem-csi-operator.yaml=deploy/kustomize/operator
 

deploy/common/pmem-storageclass-cache.yaml

@@ -356,7 +356,6 @@ Two diagrams are generated using the
 [plantuml program](http://plantuml.com/).
 Source files:
 - [source file for regular sequence](/docs/diagrams/sequence.wsd)
-- [source file for cache sequence](/docs/diagrams/sequence-cache.wsd)
 
 The PNG files are committed as repository elements in docs/images/sequence/.
 

deploy/kustomize/storageclass-cache/cache.yaml

@@ -33,7 +33,6 @@ DEPLOY=(
     pmem-storageclass-ext4-kata.yaml
     pmem-storageclass-xfs.yaml
     pmem-storageclass-xfs-kata.yaml
-    pmem-storageclass-cache.yaml
     pmem-storageclass-late-binding.yaml
     scheduler
     webhook