lowering: Don't implicitly @nospecialize macros

There's not much purpose of this de-specialization, since macros are
generally excluded from inference / compilation anyway (except for
JuliaLang#57833 which was a bug)

Since our AST is already relatively homogeneous, it's not clear that
we gained much by this de-specialization when it was used. Arbitrarily
de-specializing a function also often leads to bad (wide) edges in
inference etc., causing frequent invalidations.

Author: topolarity

src/julia-syntax.scm

@@ -1347,11 +1347,7 @@
             `(function (call ,(macroify-name (cadr (cadr e)))
                              (|::| __source__ (core LineNumberNode))
                              (|::| __module__ (core Module))
-                             ,@(map (lambda (v)
-                                      (if (symbol? v)
-                                          `(meta nospecialize ,v)
-                                          v))
-                                    anames))
+                             ,@anames)
                        ,@(cddr e)))))
         ((and (length= e 2) (valid-macro-def-name? (cadr e)))
          (expand-forms `(function ,(macroify-name (cadr e)))))