Storage descriptors were introduced for view partitions as part of
HIVE-2795. This was to allow view partitions to have the concept of a region as well as to fix a NPE that resulted from calling describe formatted on them.
Since regions are no longer necessary for view partitions and the NPE can be fixed by not displaying storage information for view partitions (or displaying the view's storage information if this is preferred, although, since a view partition is purely metadata, this does not seem necessary), these are no longer needed.
This also means the Python script added which retroactively adds storage descriptors to existing view partitions can be removed.