My system takes a long time to boot and looking at dmesg output I found an entry with BNEP (Ethernet Emulation) ver 1.3 that takes around 27 seconds to load.

Does anyone have a clue on how to speed it up or to disable it?

Here is what my dmesg output looks like (Bluetooth isse is on line 844)

EDIT: Output of systemd-analyze blame as GAD3R suggested:

 1m 31.246s openvas-manager.service 8.827s networking.service 7.455s dev-sda9.device 5.675s accounts-daemon.service 4.958s arpwatch.service 4.467s redis-server.service 

Looking at the output I realized that the problem was with openvas-manager which was probably delaynig the rest of processes and thus the issue was unrelated to the bluetooth service and after removing openvas-service boot time is now back to normal.