Revert "update example for new futures api"

This reverts commit 2cfa52b.

Author: MoralCode

example/lib/main.dart

@@ -151,22 +151,10 @@ class _SimpleErgViewState extends State<SimpleErgView> {
     });
 
     targetDevice!.monitorForWorkoutSummary().listen((summary) {
-      print(summary);
-      //TODO: update this for futures
-      summary.workDistance.then((dist) {
-        setState(() {
-          displayText = "distance: $dist";
-        });
-      });
-      summary.timestamp.then((time) {
-        setState(() {
-          displayText2 = "datetime: $time";
-        });
-      });
-      summary.avgSPM.then((spm) {
-        setState(() {
-          displayText3 = "sr: $spm";
-        });
+      setState(() {
+        displayText = "distance: ${summary.workDistance}";
+        displayText2 = "datetime: ${summary.timestamp}";
+        displayText3 = "sr: ${summary.avgSPM}";
       });
     });
   }