[Drbd-dev] remove kernel_setsockopt and kernel_getsockopt

[David Miller]

From: David Laight <David.Laight at ACULAB.COM>
Date: Thu, 14 May 2020 08:29:30 +0000

> You need to export functions that do most of the socket options
> for all protocols.

If all in-tree users of this stuff are converted, there is no argument
for keeping these routines.

You seemed to be concerned about out of tree stuff.  If so, that's not
of our concern.