Don't automatically backup settings in Android demo apps

Author: grisaitis

examples/demo-apps/android/ExecuTorchDemo/app/src/main/AndroidManifest.xml

@@ -10,7 +10,7 @@
     <uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
 
     <application
-        android:allowBackup="true"
+        android:allowBackup="false"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:fullBackupContent="@xml/backup_rules"
         android:icon="@mipmap/ic_launcher"

examples/demo-apps/android/LlamaDemo/app/src/main/AndroidManifest.xml

@@ -16,7 +16,7 @@
 
     <application
         android:name=".ETLogging"
-        android:allowBackup="true"
+        android:allowBackup="false"
         android:dataExtractionRules="@xml/data_extraction_rules"
         android:extractNativeLibs="true"
         android:fullBackupContent="@xml/backup_rules"