Change path to internetemulator dockerfile, to fix image build

Change-Id: I949b8750c1083f4f5f6ac7a300049a38ad793a97
diff --git a/developer/docker_images.yml b/developer/docker_images.yml
index 866b018..2692c10 100644
--- a/developer/docker_images.yml
+++ b/developer/docker_images.yml
@@ -210,7 +210,6 @@
 
   - name: xosproject/internetemulator-synchronizer
     repo: internetemulator
-    path: "xos/synchronizer"
     dockerfile: "Dockerfile.synchronizer"
 
   - name: xosproject/sdncontroller-synchronizer