Revert xmlns changes

androidApp/src/main/res/values-it-rIT/strings.xml

@@ -1,5 +1,5 @@
 <?xml version="1.0" encoding="utf-8"?>
-<resources>
+<resources xmlns:tools="http://schemas.android.com/tools">
     <string name="app_name">"Lettore RSS per Selfoss"</string>
     <string name="title_activity_login">"Accedi"</string>
     <string name="prompt_password">"Password"</string>