Fix --mods and --modListFile arguments not making it past LaunchWrapper.

src/main/java/net/minecraftforge/fml/common/launcher/FMLTweaker.java

@@ -143,11 +143,6 @@ public class FMLTweaker implements ITweaker {
     @Override
     public String getLaunchTarget()
     {
-        // Remove the extraneous mods and modListFile args
-        @SuppressWarnings("unchecked")
-        Map<String,String> args = (Map<String, String>) Launch.blackboard.get("launchArgs");
-        args.remove("--modListFile");
-        args.remove("--mods");
         return "net.minecraft.client.main.Main";
     }
 
@@ -159,10 +154,11 @@ public class FMLTweaker implements ITweaker {
 
         for (Entry<String, String> arg : launchArgs.entrySet())
         {
+            if ("--modListFile".equals(arg.getKey()) || "--mods".equals(arg.getKey()))
+                continue;
             args.add(arg.getKey());
             args.add(arg.getValue());
         }
-        launchArgs.clear();
 
         return args.toArray(new String[args.size()]);
     }