[esock|test] Improved the path "unlink"
[esock|test] Improved the path "unlink"

Wrapped unlinking of path (for Unix Domain sockets) in a
utility function.

OTP-15822

mikpe/otp,electricimp/otp,mikpe/otp,erlang/otp,erlang/otp,uabboli/otp,vinoski/otp,vinoski/otp,getong/otp,dgud/otp,uabboli/otp,RoadRunnr/otp,g-andrade/otp,potatosalad/otp,ferd/otp,uabboli/otp,lrascao/otp,isvilen/otp,mikpe/otp,jj1bdx/otp,vladdu/otp,aboroska/otp,getong/otp,getong/otp,getong/otp,kvakvs/otp,bjorng/otp,kvakvs/otp,uabboli/otp,RoadRunnr/otp,g-andrade/otp,g-andrade/otp,potatosalad/otp,dgud/otp,bjorng/otp,RoadRunnr/otp,getong/otp,electricimp/otp,vinoski/otp,ferd/otp,dgud/otp,g-andrade/otp,bjorng/otp,rlipscombe/otp,emacsmirror/erlang,dumbbell/otp,legoscia/otp,vladdu/otp,RoadRunnr/otp,rlipscombe/otp,jj1bdx/otp,isvilen/otp,lrascao/otp,vladdu/otp,vladdu/otp,aboroska/otp,jj1bdx/otp,vinoski/otp,ferd/otp,uabboli/otp,aboroska/otp,vladdu/otp,dumbbell/otp,dgud/otp,rlipscombe/otp,dumbbell/otp,kvakvs/otp,uabboli/otp,bjorng/otp,rlipscombe/otp,legoscia/otp,emacsmirror/erlang,dumbbell/otp,ferd/otp,electricimp/otp,lrascao/otp,vladdu/otp,legoscia/otp,aboroska/otp,lrascao/otp,erlang/otp,bjorng/otp,rlipscombe/otp,isvilen/otp,dgud/otp,jj1bdx/otp,vinoski/otp,emacsmirror/erlang,isvilen/otp,RoadRunnr/otp,bjorng/otp,legoscia/otp,electricimp/otp,isvilen/otp,legoscia/otp,kvakvs/otp,kvakvs/otp,erlang/otp,bjorng/otp,RoadRunnr/otp,getong/otp,legoscia/otp,isvilen/otp,dgud/otp,vladdu/otp,jj1bdx/otp,mikpe/otp,getong/otp,electricimp/otp,aboroska/otp,erlang/otp,electricimp/otp,RoadRunnr/otp,kvakvs/otp,vinoski/otp,lrascao/otp,lrascao/otp,legoscia/otp,bjorng/otp,mikpe/otp,electricimp/otp,bjorng/otp,aboroska/otp,erlang/otp,bjorng/otp,uabboli/otp,getong/otp,lrascao/otp,ferd/otp,dumbbell/otp,vinoski/otp,potatosalad/otp,vladdu/otp,legoscia/otp,dumbbell/otp,jj1bdx/otp,kvakvs/otp,rlipscombe/otp,aboroska/otp,dgud/otp,emacsmirror/erlang,mikpe/otp,mikpe/otp,emacsmirror/erlang,jj1bdx/otp,kvakvs/otp,emacsmirror/erlang,potatosalad/otp,erlang/otp,jj1bdx/otp,dumbbell/otp,getong/otp,erlang/otp,dumbbell/otp,mikpe/otp,potatosalad/otp,dumbbell/otp,dgud/otp,g-andrade/otp,erlang/otp,vinoski/otp,getong/otp,kvakvs/otp,lrascao/otp,rlipscombe/otp,rlipscombe/otp,electricimp/otp,g-andrade/otp,ferd/otp,g-andrade/otp,isvilen/otp,ferd/otp,lrascao/otp,emacsmirror/erlang,jj1bdx/otp,mikpe/otp,dgud/otp,potatosalad/otp,g-andrade/otp,uabboli/otp,aboroska/otp,emacsmirror/erlang,potatosalad/otp,g-andrade/otp,potatosalad/otp,rlipscombe/otp,isvilen/otp,electricimp/otp,dgud/otp,g-andrade/otp,isvilen/otp,vladdu/otp,dumbbell/otp,erlang/otp,uabboli/otp,potatosalad/otp,potatosalad/otp,emacsmirror/erlang,mikpe/otp,legoscia/otp,isvilen/otp,emacsmirror/erlang,vinoski/otp,ferd/otp,rlipscombe/otp,RoadRunnr/otp,aboroska/otp,jj1bdx/otp,vinoski/otp,RoadRunnr/otp,ferd/otp