Got rid of an unused "InfoBubbleGrid" in "DynamoView.xaml"

The branch "[Glimpse](https://github.com/Benglin/Dynamo/tree/Glimpse)" is set up for [something bigger](https://docs.google.com/a/adsk-oss.com/document/d/1Lr4Cy_YHQ7muZ85AHKwLv0zPgOVgbAToMx302fALIzw/edit), but I need to go off to design some aspect of the system, so I'm just quickly request this to be pulled while I work on designing some of the stuff.