Removing unused AsyncFromSyncBaseNode.getPromiseResolveNode field.

Author: iamstolis

graal-js/src/com.oracle.truffle.js/src/com/oracle/truffle/js/builtins/AsyncFromSyncIteratorPrototypeBuiltins.java

@@ -133,7 +133,6 @@ private abstract static class AsyncFromSyncBaseNode extends JSBuiltinNode {
         static final HiddenKey DONE = new HiddenKey("Done");
 
         @Child private PropertyGetNode getPromiseNode;
-        @Child private PropertyGetNode getPromiseResolveNode;
 
         @Child private JSFunctionCallNode executePromiseMethodNode;
         @Child private NewPromiseCapabilityNode newPromiseCapabilityNode;