Remove another use of yield, this time from CountTrees

Author: AngledLuffa

src/edu/stanford/nlp/parser/tools/CountTrees.java

@@ -100,8 +100,7 @@ public static void main(String[] args) {
         pw.println(SentenceUtils.listToString(tree.preTerminalYield()));
 
       } else if (printTnT) {
-        List<CoreLabel> yield = tree.taggedLabeledYield();
-        for (CoreLabel label : yield) {
+        for (CoreLabel label : tree.taggedLabeledYield()) {
           pw.printf("%s\t%s%n", label.word(), label.tag());
         }
         pw.println();