0023604: Uninitialized variables in debug mode

Removed #ifndef DEB ... #else ... #endif directives where the variables were being initialized only in release mode.
Removed unused part of code.

src/Draw/Draw_Display.cxx

@@ -106,10 +106,8 @@ void Draw_Display::DrawMarker (const gp_Pnt2d& pt,
     C.SetLocation(pt);
     Draw(C, 0, 2*M_PI, Standard_False);
     break;
-#ifndef DEB
   default:
     break;
-#endif
     
   }
   Draw_Bounds = Standard_True;