Removes datauri triggered save instructions modal (#7296)

* Do not trigger a save instructions modal when viewing through data uri

* Removed all instances of the no longer used SaveInstructions tiddler

core/modules/startup/rootwidget.js

@@ -87,13 +87,6 @@ exports.startup = function() {
 			}
 		});
 	}
-	// If we're being viewed on a data: URI then give instructions for how to save
-	if(document.location.protocol === "data:") {
-		$tw.rootWidget.dispatchEvent({
-			type: "tm-modal",
-			param: "$:/language/Modals/SaveInstructions"
-		});
-	}
 };
 
 })();