Remove unused methods

Author: JordanMartinez

richtextfx/src/main/java/org/fxmisc/richtext/GenericStyledArea.java

@@ -1407,18 +1407,10 @@ private Optional<Bounds> getRangeBoundsOnScreen(int paragraphIndex, int from, in
                 .map(c -> c.getNode().getRangeBoundsOnScreen(from, to));
     }
 
-    private <T> void subscribeTo(EventStream<T> src, Consumer<T> cOnsumer) {
-        manageSubscription(src.subscribe(cOnsumer));
-    }
-
     private void manageSubscription(Subscription subscription) {
         subscriptions = subscriptions.and(subscription);
     }
 
-    private void manageBinding(Binding<?> binding) {
-        subscriptions = subscriptions.and(binding::dispose);
-    }
-
     private static Bounds extendLeft(Bounds b, double w) {
         if(w == 0) {
             return b;