Revert "[truffle] Fix wrong class name in getlex"

This reverts commit ed653e1.

Author: pmurias

src/vm/jvm/runtime/org/perl6/nqp/truffle/nodes/expression/NQPGetlexNode.java

@@ -8,12 +8,12 @@
 import org.perl6.nqp.dsl.Deserializer;
 
 @NodeInfo(shortName = "getlex_o")
-public final class NQPGetlexNode extends NQPObjNode {
+public final class NQPGetlexObjNode extends NQPObjNode {
     @Child private NQPNode leftNode;
     @Child private NQPNode rightNode;
 
     @Deserializer
-    public NQPGetlexNode(NQPNode leftNode, NQPNode rightNode) {
+    public NQPGetlexObjNode(NQPNode leftNode, NQPNode rightNode) {
         this.leftNode = leftNode;
         this.rightNode = rightNode;
     }