Merge pull request #588 from OneSignal/remove-os-gradle-plugin

Remove the OneSignal gradle plugin from the example app.

Author: brismithers

example/android/app/build.gradle

@@ -1,17 +1,3 @@
-buildscript {
-    repositories {
-        // ...
-        maven { url 'https://plugins.gradle.org/m2/' } // Gradle Plugin Portal
-    }
-    dependencies {
-        // ...
-        // OneSignal-Gradle-Plugin
-        classpath 'gradle.plugin.com.onesignal:onesignal-gradle-plugin:[0.10.2, 0.99.99]'
-    }
-}
-
-apply plugin: 'com.onesignal.androidsdk.onesignal-gradle-plugin'
-
 def localProperties = new Properties()
 def localPropertiesFile = rootProject.file('local.properties')
 if (localPropertiesFile.exists()) {