0023814: Drop plugin interface for Graphic3d_GraphicDriver instantiation

0023814: Drop plugin interface for Graphic3d_GraphicDriver instantiation

Drop Graphic3d_GraphicDriver::Begin() and ::End() methods.
Initialization is performed within driver constructor.

Drop dummy argument for Graphic3d_GraphicDriver constructor with library name.
Display connection now should be set instead

Drop Graphic3d::InitGraphicDriver() function and Graphic3d.hxx header.
Application code should explicitly link against TKOpenGl toolkit and instantiate OpenGl_GraphicDriver class.

Drop MetaGraphicDriverFactory implementation within TKOpenGl.