bug#31852: Make memory-limit obsolete

[Paul Eggert <eggert@cs.ucla.edu>]

Eli Zaretskii wrote:
> I don't understand what we gain by declaring
> this tiny function obsolete

Nobody uses the function (clearly, since it doesn't work) so we gain simplicity, 
which is a win.

> Wouldn't it be enough just to add to the function's
> documentation a note that the estimation should be expected to be
> inaccurate with modern memory-management technologies?

Complicating the documentation would work against the goal of simplicity. If the 
goal is something other than simplicity, it'd be helpful to know what the goal 
is before proposing a different patch 2. The idea behind patch 2 is that 
simplicity trumps compatibility here, as nobody uses the function and nobody 
will use it even if patch 1 is applied, partly because of the inaccuracies that 
you mention.