disable -D haxe3 for haxelib right now (neko v1)

std/tools/haxelib/haxelib.hxml

@@ -5,4 +5,3 @@
 -neko haxelib.n
 -main tools.haxelib.Main
 -cmd "nekotools boot haxelib.n"
--D haxe3

std/tools/haxelib/haxelib.hxproj

@@ -23,7 +23,7 @@
     <option flashStrict="False" />
     <option mainClass="tools.haxelib.Site" />
     <option enabledebug="False" />
-    <option additional="-D haxe3&#xA;--next&#xA;-neko haxelib.n&#xA;-main tools.haxelib.Main&#xA;-cmd nekotools boot haxelib.n&#xA;-D haxe3" />
+    <option additional="-D haxe3&#xA;--next&#xA;-neko haxelib.n&#xA;-main tools.haxelib.Main&#xA;-cmd nekotools boot haxelib.n" />
   </build>
   <!-- haxelib libraries -->
   <haxelib>