Revert "Update NASBackupProvider.java"

This reverts commit 7ff5692.

Author: Dajeong-Park

plugins/backup/nas/src/main/java/org/apache/cloudstack/backup/NASBackupProvider.java

@@ -245,13 +245,9 @@ private List<String> getVolumePaths(List<VolumeVO> volumes) {
             if (Objects.isNull(storagePool)) {
                 throw new CloudRuntimeException("Unable to find storage pool associated to the volume");
             }
-            String volumePathPrefix = "";
+            String volumePathPrefix = String.format("/mnt/%s", storagePool.getUuid());
             if (ScopeType.HOST.equals(storagePool.getScope())) {
                 volumePathPrefix = storagePool.getPath();
-            } else if (Storage.StoragePoolType.SharedMountPoint.equals(storagePool.getPoolType())) {
-                volumePathPrefix = storagePool.getPath();
-            } else {
-                volumePathPrefix = String.format("/mnt/%s", storagePool.getUuid());
             }
             volumePaths.add(String.format("%s/%s", volumePathPrefix, volume.getPath()));
         }