You can just perform a factory restore from trwp. Make sure to check all the criteria. Not just cache. This way, the phone is wiped clean but root remains. If you don't want root and completely stock, do what the post above me said.
From the notification long press it and go to app info. Unchecked show notification.
My,nexus 4 did,that on 4.4.4. I facet restored, went back to 4.4.2, 4.3, back to stock uprooted. Did not fix it. Mine also started by fixing it by a reboot, but 2 months after it just stuck off.
Phone is rooted. Twrp recovery.
I have flashed Franco, stock, matr1x. Kernels and no luck.
The phone was always disconnecting from WiFi after 4.4.3 update. But one day it stopped and I usually restart to fix and nothing. From there, I start...
So every since 4.4.3 my WiFi automatically turns off. As in the WiFi is actually on, but it looses connection. Can't reconnect as it will not do so. Can't turn WiFi off. It literally will not turn off. The WiFi off switch freezes on spot.