Remove STOPSHIP comment

Change-Id: I2d42d6ddb16f88929b5edeeeb653feca8348e804
diff --git a/NatController.cpp b/NatController.cpp
index 291ed57..8c88698 100644
--- a/NatController.cpp
+++ b/NatController.cpp
@@ -84,7 +84,7 @@
 }
 
 bool NatController::interfaceExists(const char *iface) {
-    // XXX: STOPSHIP - Implement this
+    // XXX: Implement this
     return true;
 }