You could configure which apps are allowed to create notifications in the top left area, the notification area. If an app creates a notification it will be collected and added to the list.
You could deny *all* notifications of an app or only *specific* messages - if it's not a customized notification. So I used it to hide "waiting for connection", but not "you are connected".
With a donation you supports this app and get more options.

IMPORTANT
Your device has to be rooted to install the required X-posed framework: http://tinyurl.com/cd46qco


Donator-App & Features: https://play.google.com/store/apps/details?id=de.defim.apk.notifyclean.donator

Step 1. Download NotifyClean Mod (Unlocked) APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.NotifyClean Mod (Unlocked) APK will begin installing on your device. Simple.

Step 1. Download HappyMod APK file on HappyMod.com.
Step 2. Once it's downloaded, open Downloads, tap on the APK file, and tap Yes when prompted.
Step 3.Search NotifyClean Mod, click Download.
Step 4: You can download 100% working mods on HappyMod with one click.