Remove symbol? from con syntax.

dvanhorn · dvanhorn · commit a8fe3ff4c71e · 2019-09-15T09:52:53.000-04:00
diff --git a/www/notes/con/syntax.rkt b/www/notes/con/syntax.rkt
@@ -5,7 +5,6 @@
 ;; Is x a well-formed expression?
 (define (expr? x)
   (match x
-    [(? symbol?) #t]
     [(? integer? i) #t]
     [`(add1 ,x) (expr? x)]
     [`(sub1 ,x) (expr? x)]
