use nats-js cache

Signed-off-by: jkoberg <jkoberg@owncloud.com>

vendor/github.com/cs3org/reva/v2/pkg/storage/utils/decomposedfs/metadata/messagepack_backend.go

@@ -275,9 +275,7 @@ func (MessagePackBackend) IsMetaFile(path string) bool {
 
 // Purge purges the data of a given path
 func (b MessagePackBackend) Purge(path string) error {
-	if err := b.metaCache.RemoveMetadata(b.cacheKey(path)); err != nil {
-		return err
-	}
+	_ = b.metaCache.RemoveMetadata(b.cacheKey(path))
 	return os.Remove(b.MetadataPath(path))
 }
 
@@ -291,10 +289,7 @@ func (b MessagePackBackend) Rename(oldPath, newPath string) error {
 			return err
 		}
 	}
-	err = b.metaCache.RemoveMetadata(b.cacheKey(oldPath))
-	if err != nil {
-		return err
-	}
+	_ = b.metaCache.RemoveMetadata(b.cacheKey(oldPath))
 
 	return os.Rename(b.MetadataPath(oldPath), b.MetadataPath(newPath))
 }