Error message minor (#18021)

* Update compiler/semtypes.nim

Co-authored-by: Timothee Cour <timothee.cour2@gmail.com>
Co-authored-by: flywind <xzsflywind@gmail.com>
Co-authored-by: Andreas Rumpf <rumpf_a@web.de>

compiler/lineinfos.nim

@@ -110,7 +110,7 @@ const
     warnFieldXNotSupported: "field '$1' not supported",
     warnRstStyle: "RST style: $1",
     warnCommentXIgnored: "comment '$1' ignored",
-    warnTypelessParam: "'$1' has no type. Typeless parameters are deprecated; only allowed for 'template'",
+    warnTypelessParam: "", # deadcode
     warnUseBase: "use {.base.} for base methods; baseless methods are deprecated",
     warnWriteToForeignHeap: "write to foreign heap",
     warnUnsafeCode: "unsafe code: '$1'",

compiler/semtypes.nim

@@ -1297,7 +1297,7 @@ proc semProcTypeNode(c: PContext, n, genericParams: PNode,
         let param = strTableGet(c.signatures, arg.name)
         if param != nil: typ = param.typ
         else:
-          localError(c.config, a.info, "typeless parameters are obsolete")
+          localError(c.config, a.info, "parameter '$1' requires a type" % param.name.s)
           typ = errorType(c)
       let lifted = liftParamType(c, kind, genericParams, typ,
                                  arg.name.s, arg.info)