Is there any way to disable the "Storage space running out" notification on Cyanogenmod 10.1.3 [Android 4.2.2], through ADB or otherwise ?
To permanently disable storage notifications, try long-pressing on the notification, go to
App Info and uncheck
Show notifications. You must do it through long-pressing.
If it is un-checkable, hit
Force Stop and confirm.
This is a known method to get rid of Verizon's persistent Wifi notification: Similar Guide
Hope this helps,
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".
Install the module, activate it in Xposed Installer app, reboot the device, wait for the "Storage space running out" notification, long press the notification → App info/details → note the app's label causing that notification. It may possibly be Android System.
Now, launch NotifyClean → tap the entry of the app whose label you noted → select the notification you want to hide (it would turn red). Reboot and the notification would remain hidden.