Update push.md (#110)

One sentences was repeated: "This will change the Push folders setting to None for all accounts. This will change the Push folders setting to None for all accounts."

Author: pixel2user

docs/en/settings/push.md

@@ -83,9 +83,7 @@ To disable Push, tap the notification, then press the *Disable Push* button.
 ![k9mail_push__info_screen](img/push_info_screen.png)
 
 This will change the *Push folders* setting to *None* for all accounts.
-This will change the *Push folders* setting to *None* for all accounts.
-
 
 ## What to do when Push is not working reliably?
 
-Some vendors have modified the Android versions on their devices to use very aggressive power saving measures. Check out the website [Don't kill my app!](https://dontkillmyapp.com/) to learn how to best configure your device.
+Some vendors have modified the Android versions on their devices to use very aggressive power saving measures. Check out the website [Don't kill my app!](https://dontkillmyapp.com/) to learn how to best configure your device.