To begin, I see the logic of moving Half-Orc and Half-Elf. But this move is akin to Wizards of the Coast removing the gnome race from D&D 4E - its a bad idea.
To play a "standard" race, iconic to the fantasy game, there is a feat tax. The feat tax - One of the huge flaws from D&D 3.5E that translated in Pathfinder RPG.
Please put Half-Orc and Half-Elf back. Please don't make the same mistake as D&D 4E.