Remove grid-gwt and parking from tested demos

Change-Id: I0a34471073961cb5090e43aade8e2732de522a1d

scripts/BuildDemos.py

@@ -17,9 +17,7 @@ from xml.etree.ElementTree import ElementTree
 # Validated demos. name -> git url
 demos = {
 	"dashboard" : "https://github.com/vaadin/dashboard-demo.git",
-	"parking" : "https://github.com/vaadin/parking-demo.git",
 	"addressbook" : "https://github.com/vaadin/addressbook.git",
-	"grid-gwt" : "https://github.com/vaadin/grid-gwt.git",
 	"sampler" : "demos/sampler"
 #	"my-demo" : ("my_demo_url_or_path", "my-demo-dev-branch")
 }