dselect: Remove dead code after break keyword

The commit d4d3484ac88ca3953fef3cf2c0464cdc776b6574 forgot to remove
this code.

dselect/pkgdisplay.cc

@@ -248,8 +248,6 @@ void packagelist::redrawtitle() {
           internerr("bad statsort in redrawtitle/so_priority");
         }
         break;
-        waddnstr(titlewin, _(" (alphabetically)"), xmax-x);
-        break;
       case so_unsorted:
         break;
       default: