Bug 1963203 - remove android app name from about:buildconfig r=firefox-build-system-reviewers,nalexander

The actual package name is not known at geckoview build time, so having
it there is just confusing.

Differential Revision: https://phabricator.services.mozilla.com/D247120

toolkit/content/buildconfig.html

@@ -63,10 +63,6 @@
       #endif
       <h2>Configure options</h2>
       <p>@MOZ_CONFIGURE_OPTIONS@</p>
-      #ifdef ANDROID
-      <h2>Package name</h2>
-      <p>@ANDROID_PACKAGE_NAME@</p>
-      #endif
     </div>
   </body>
 </html>