Update haxelib.json

haxelib.json: Removed hxcpp dependency. You still need hxcpp obviously, but haxelib dep was causing more trouble (with e.g. CI) than it was worth.

haxelib.json

@@ -8,6 +8,5 @@
  "releasenote": "Initial Release",
  "contributors": ["dukope,grapefrukt,sharkpunch,larsiusprime"],
  "dependencies": { 
-  "hxcpp": ""
  }
-}
+}