Remove the bs short name for BackupSession (#859)

Signed-off-by: Tamal Saha <tamal@appscode.com>

Author: tamalsaha

api/crds/v1beta1/backupsession.yaml

@@ -25,8 +25,6 @@ spec:
     - appscode
     kind: BackupSession
     plural: backupsessions
-    shortNames:
-    - bs
     singular: backupsession
   scope: Namespaced
   subresources:

apis/stash/v1beta1/backup_session_helpers.go

@@ -22,7 +22,6 @@ func (bs BackupSession) CustomResourceDefinition() *apiextensions.CustomResource
 		Plural:        ResourcePluralBackupSession,
 		Singular:      ResourceSingularBackupSession,
 		Kind:          ResourceKindBackupSession,
-		ShortNames:    []string{"bs"},
 		Categories:    []string{"stash", "backup", "appscode"},
 		ResourceScope: string(apiextensions.NamespaceScoped),
 		Versions: []apiextensions.CustomResourceDefinitionVersion{