- goog.object/containsKey hint no longer needed

Author: swannodette

src/main/cljs/cljs/core.cljs

@@ -12180,7 +12180,7 @@ reduces them without incurring seq initialization"
     (let [k (munge (str_ sym))]
       ;; FIXME: this shouldn't need ^boolean due to GCL library analysis,
       ;; but not currently working
-      (when ^boolean (gobject/containsKey obj k)
+      (when (gobject/containsKey obj k)
         (let [var-sym (symbol (str_ name) (str_ sym))
               var-meta {:ns this}]
           (Var. (ns-lookup obj k) var-sym var-meta)))))