Autoconf: remove a test for perl 4
Autoconf: remove a test for perl 4

This test in the autoconf is both limited, relatively dangerous
(changequote really...) and simply redundant.

If someone built OTP on a machine where perl 4 is the default
they called it on themselves.

ferd/otp,uabboli/otp,dumbbell/otp,isvilen/otp,isvilen/otp,bjorng/otp,rlipscombe/otp,getong/otp,isvilen/otp,erlang/otp,vinoski/otp,potatosalad/otp,emacsmirror/erlang,dumbbell/otp,getong/otp,jj1bdx/otp,potatosalad/otp,getong/otp,bjorng/otp,mikpe/otp,erlang/otp,vinoski/otp,dumbbell/otp,jj1bdx/otp,mikpe/otp,erlang/otp,g-andrade/otp,potatosalad/otp,erlang/otp,getong/otp,rlipscombe/otp,dgud/otp,emacsmirror/erlang,dumbbell/otp,g-andrade/otp,emacsmirror/erlang,uabboli/otp,mikpe/otp,isvilen/otp,mikpe/otp,emacsmirror/erlang,emacsmirror/erlang,ferd/otp,isvilen/otp,ferd/otp,getong/otp,potatosalad/otp,jj1bdx/otp,isvilen/otp,getong/otp,rlipscombe/otp,dgud/otp,erlang/otp,dgud/otp,emacsmirror/erlang,jj1bdx/otp,dumbbell/otp,jj1bdx/otp,bjorng/otp,emacsmirror/erlang,uabboli/otp,potatosalad/otp,rlipscombe/otp,vinoski/otp,erlang/otp,jj1bdx/otp,vinoski/otp,bjorng/otp,emacsmirror/erlang,rlipscombe/otp,ferd/otp,mikpe/otp,g-andrade/otp,vinoski/otp,vinoski/otp,emacsmirror/erlang,dumbbell/otp,rlipscombe/otp,erlang/otp,g-andrade/otp,dumbbell/otp,g-andrade/otp,vinoski/otp,dgud/otp,mikpe/otp,g-andrade/otp,isvilen/otp,potatosalad/otp,bjorng/otp,jj1bdx/otp,dumbbell/otp,uabboli/otp,getong/otp,ferd/otp,isvilen/otp,mikpe/otp,jj1bdx/otp,erlang/otp,getong/otp,ferd/otp,g-andrade/otp,isvilen/otp,rlipscombe/otp,uabboli/otp,isvilen/otp,vinoski/otp,g-andrade/otp,vinoski/otp,dgud/otp,g-andrade/otp,uabboli/otp,uabboli/otp,dgud/otp,getong/otp,potatosalad/otp,bjorng/otp,dgud/otp,rlipscombe/otp,uabboli/otp,dgud/otp,mikpe/otp,jj1bdx/otp,potatosalad/otp,mikpe/otp,bjorng/otp,g-andrade/otp,ferd/otp,dgud/otp,bjorng/otp,dumbbell/otp,dgud/otp,bjorng/otp,jj1bdx/otp,dumbbell/otp,potatosalad/otp,potatosalad/otp,bjorng/otp,rlipscombe/otp,vinoski/otp,mikpe/otp,ferd/otp,erlang/otp,getong/otp,uabboli/otp,emacsmirror/erlang,ferd/otp,erlang/otp,rlipscombe/otp