[MOB-9974] Resolve deprecated API calls in the sample app (#754)

* Rename BugReporting removed `showWithOptions` to `show`

This method was deprecated and then removed in #703, so it crashes the sample app when you press the "SEND BUG REPORT" button, for that I changed it to the current version of it, `BugReporting.show`.

* Remove undefined `showIntroMessage` method in sample

Author: a7medev

InstabugSample/App.js

@@ -103,10 +103,6 @@ class Home extends Component<{}> {
     );
   }
 
-  showIntroMessage() {
-    Instabug.showIntroMessage();
-  }
-
   invoke() {
     Instabug.show();
   }
@@ -124,7 +120,7 @@ class Home extends Component<{}> {
   }
 
   sendBugReport() {
-    BugReporting.showWithOptions(BugReporting.reportType.bug);
+    BugReporting.show(BugReporting.reportType.bug);
   }
 
   sendCrashReport() {