remove setting asyncFn.name to fix a safari bug

Author: aearly

lib/internal/awaitify.js

@@ -16,10 +16,5 @@ export default function awaitify (asyncFn, arity = asyncFn.length) {
         })
     }
 
-    Object.defineProperty(awaitable, 'name', {
-        configurable: true, // allows redefining
-        value: `awaitable(${asyncFn.name})`
-    })
-
     return awaitable
 }