Clean up vestigle old alert code

src/views/SeedBackupView.vue

@@ -103,6 +103,8 @@ import AlertMessage from "@/components/AlertMessage";
 export default class SeedBackupView extends Vue {
   activeAccount = null;
   showSeed = false;
+  alertMessage = "";
+  alertTitle = "";
 
   // 'created' hook runs when the Vue instance is first created
   async created() {
@@ -118,16 +120,11 @@ export default class SeedBackupView extends Vue {
       console.error("Got an error loading an identity:", err);
       this.alertTitle = "Error Loading Account";
       this.alertMessage = "Got an error loading your seed data.";
-      this.isAlertVisible = true;
     }
   }
 
   showSeedPhrase() {
     this.showSeed = true;
   }
-
-  // This same popup code is in many files.
-  alertMessage = "";
-  alertTitle = "";
 }
 </script>