estudio: deprecate phases

pkgs/misc/cups/drivers/estudio/default.nix

···
 
   buildInputs = [ perl ];
 
-  phases = [ "unpackPhase"
-             "patchPhase"
-             "installPhase" ];
-
   patchPhase = ''
     patchShebangs lib/
     gunzip                share/cups/model/Toshiba/TOSHIBA_ColorMFP_CUPS.gz