I have disabled improved sleeping in the config (via the mod options menu):
B:"Improved sleeping"=false

But the "Night has passed. (1/1)" message is still shown after sleeping.
This message has absolutely no use in a single player world.

I'm using:
Singleplayer
Quark r1.5-168
Forge 14.23.5.2838

I'm NOT using Optifine