Remove deprecated -smp flag

It was deprecated in 2012 with 46258b40

Remove deprecated -smp flag
It was deprecated in 2012 with 46258b40
b62b8cea · Ömer Sinan Ağacan · Marge Bot · 66e511a4 · b62b8cea
Commit b62b8cea authored Jan 13, 2020 by Ömer Sinan Ağacan Committed by Marge Bot Jan 20, 2020
--- a/compiler/main/DynFlags.hs
+++ b/compiler/main/DynFlags.hs
@@ -3021,8 +3021,6 @@ dynamic_flags_deps = [
    ------- ways ---------------------------------------------------------------
  , make_ord_flag defGhcFlag "prof"           (NoArg (addWay WayProf))
  , make_ord_flag defGhcFlag "eventlog"       (NoArg (addWay WayEventLog))
-  , make_dep_flag defGhcFlag "smp"
-      (NoArg $ addWay WayThreaded) "Use -threaded instead"
  , make_ord_flag defGhcFlag "debug"          (NoArg (addWay WayDebug))
  , make_ord_flag defGhcFlag "threaded"       (NoArg (addWay WayThreaded))