We have intention to remove 2d viewer from OCCT as it seems to be out of real use for years, and does not worth efforts required for its maintenance.
This also applies to MFT fonts and plotting support.
The applications that might be still using 2d viewer (if they exist) will have to use 3d viewer in fixed-projection mode.
Please comment to this thread if you are using the functionality to be removed in your applications and cannot find equivalent replacement in 3d viewer or elsewhere.
The packages to be removed are: V2d, Graphic2d, Select2D, Prs2d, AIS2D, GGraphic2d, PlotMgt, CGM, PS, MFT, FontMFT.
For details, see Mantis issue #23663 (http://tracker.dev.opencascade.org/view.php?id=23663), and related ones.
Is OCCT 2d viewer in use?