Removed experimental stuff: fixed NPE on launch

java.lang.NullPointerException
        at net.minecraft.item.ItemStack.<init>(ItemStack.java:86)
        at net.minecraft.item.ItemStack.<init>(ItemStack.java:81)
        at cr0s.WarpDrive.WarpDrive.initIC2Recipes(WarpDrive.java:573)
        at cr0s.WarpDrive.WarpDrive.postInit(WarpDrive.java:324)