MigrationReceiver: Remove default dispenser from App Gallery builds

While default dispenser is not added for existing installs on App Gallery builds,
existing installs still had default dispenser preseved which is not an intended behavior.

Signed-off-by: Aayush Gupta <aayushgupta219@gmail.com>

app/src/main/java/com/aurora/store/data/receiver/MigrationReceiver.kt

@@ -7,6 +7,7 @@ import android.util.Log
 import com.aurora.Constants
 import com.aurora.extensions.isSAndAbove
 import com.aurora.store.data.work.CacheWorker
+import com.aurora.store.util.CertUtil
 import com.aurora.store.util.Preferences
 import com.aurora.store.util.Preferences.PREFERENCE_DISPENSER_URLS
 import com.aurora.store.util.Preferences.PREFERENCE_INTRO
@@ -21,7 +22,7 @@ class MigrationReceiver: BroadcastReceiver() {
 
     private val TAG = MigrationReceiver::class.java.simpleName
 
-    private val prefVersion = 1 // BUMP THIS MANUALLY ON ADDING NEW MIGRATION STEP
+    private val prefVersion = 2 // BUMP THIS MANUALLY ON ADDING NEW MIGRATION STEP
 
     override fun onReceive(context: Context?, intent: Intent?) {
         if (context != null && intent?.action == Intent.ACTION_MY_PACKAGE_REPLACED) {
@@ -53,6 +54,17 @@ class MigrationReceiver: BroadcastReceiver() {
             currentVersion++
         }
 
+        // 59 -> 60
+        if (currentVersion == 1) {
+            if (CertUtil.isAppGalleryApp(context, context.packageName)) {
+                val dispensers = Preferences.getStringSet(context, PREFERENCE_DISPENSER_URLS)
+                    .toMutableSet()
+                    .remove(Constants.URL_DISPENSER)
+                context.save(PREFERENCE_DISPENSER_URLS, dispensers)
+            }
+            currentVersion++
+        }
+
         // Add new migrations / defaults above this point.
         if (currentVersion != prefVersion) {
             Log.e(TAG, "Upgrading to version $prefVersion left it at $currentVersion instead")