inets: Remove documentation of no longer supported callback
inets: Remove documentation of no longer supported callback

Was removed in OTP-23 and also in 22.3.1

Closes #6122

dgud/otp,isvilen/otp,emacsmirror/erlang,erlang/otp,dumbbell/otp,potatosalad/otp,vinoski/otp,isvilen/otp,mikpe/otp,dgud/otp,bjorng/otp,g-andrade/otp,erlang/otp,dgud/otp,potatosalad/otp,bjorng/otp,isvilen/otp,bjorng/otp,potatosalad/otp,mikpe/otp,bjorng/otp,dumbbell/otp,bjorng/otp,potatosalad/otp,g-andrade/otp,mikpe/otp,potatosalad/otp,vinoski/otp,g-andrade/otp,erlang/otp,g-andrade/otp,dumbbell/otp,vinoski/otp,erlang/otp,dgud/otp,erlang/otp,bjorng/otp,dgud/otp,isvilen/otp,g-andrade/otp,erlang/otp,mikpe/otp,g-andrade/otp,bjorng/otp,dumbbell/otp,emacsmirror/erlang,isvilen/otp,potatosalad/otp,dgud/otp,g-andrade/otp,isvilen/otp,mikpe/otp,erlang/otp,mikpe/otp,vinoski/otp,isvilen/otp,emacsmirror/erlang,dumbbell/otp,vinoski/otp,g-andrade/otp,g-andrade/otp,dumbbell/otp,emacsmirror/erlang,vinoski/otp,dgud/otp,bjorng/otp,potatosalad/otp,vinoski/otp,mikpe/otp,mikpe/otp,mikpe/otp,bjorng/otp,emacsmirror/erlang,vinoski/otp,potatosalad/otp,erlang/otp,dgud/otp,potatosalad/otp,dumbbell/otp,potatosalad/otp,emacsmirror/erlang,erlang/otp,isvilen/otp,mikpe/otp,dumbbell/otp,vinoski/otp,isvilen/otp,emacsmirror/erlang,dumbbell/otp,emacsmirror/erlang,g-andrade/otp,vinoski/otp,emacsmirror/erlang,isvilen/otp,emacsmirror/erlang,dumbbell/otp,bjorng/otp,dgud/otp,dgud/otp,erlang/otp