boot.js: removed withDefaultTransport

It's a relict from createDefaultPackage:, not used anywhere now

support/boot.js

@@ -428,17 +428,6 @@ function ClassesBrik(brikz, st) {
 		return st.packages[pkgName];
 	};
 
-	SmalltalkPackage.prototype.withDefaultTransport = function () {
-		var defaultTransportType = st.getDefaultTransportType();
-		if (this.transport) {
-			throw new Error("Cannot set default transport; transport already set");
-		}
-		if (defaultTransportType) {
-			this.transport = { type: defaultTransportType };
-		}
-		return this;
-	};
-
 	/* Add a class to the smalltalk object, creating a new one if needed.
 	 A Package is lazily created if it does not exist with given name. */