Deleted Functions.naturalOrder (#6817)

Author: slisaasquatch

src/main/java/io/reactivex/rxjava3/core/Observable.java

@@ -14692,7 +14692,7 @@ public final Flowable<T> toFlowable(@NonNull BackpressureStrategy strategy) {
     @SchedulerSupport(SchedulerSupport.NONE)
     @NonNull
     public final Single<@NonNull List<T>> toSortedList() {
-        return toSortedList(Functions.naturalOrder());
+        return toSortedList(Functions.naturalComparator());
     }
 
     /**
@@ -14786,7 +14786,7 @@ public final Flowable<T> toFlowable(@NonNull BackpressureStrategy strategy) {
     @SchedulerSupport(SchedulerSupport.NONE)
     @NonNull
     public final Single<@NonNull List<T>> toSortedList(int capacityHint) {
-        return toSortedList(Functions.naturalOrder(), capacityHint);
+        return toSortedList(Functions.naturalComparator(), capacityHint);
     }
 
     /**

src/main/java/io/reactivex/rxjava3/internal/functions/Functions.java

@@ -124,8 +124,6 @@ public static <T> Consumer<T> emptyConsumer() {
 
     static final Supplier<Object> NULL_SUPPLIER = new NullProvider();
 
-    static final Comparator<Object> NATURAL_COMPARATOR = new NaturalObjectComparator();
-
     @SuppressWarnings("unchecked")
     @NonNull
     public static <T> Predicate<T> alwaysTrue() {
@@ -144,17 +142,6 @@ public static <T> Supplier<T> nullSupplier() {
         return (Supplier<T>)NULL_SUPPLIER;
     }
 
-    /**
-     * Returns a natural order comparator which casts the parameters to Comparable.
-     * @param <T> the value type
-     * @return a natural order comparator which casts the parameters to Comparable
-     */
-    @SuppressWarnings("unchecked")
-    @NonNull
-    public static <T> Comparator<T> naturalOrder() {
-        return (Comparator<T>)NATURAL_COMPARATOR;
-    }
-
     static final class FutureAction implements Action {
         final Future<?> future;
 
@@ -767,14 +754,6 @@ public Object get() {
         }
     }
 
-    static final class NaturalObjectComparator implements Comparator<Object> {
-        @SuppressWarnings({ "unchecked", "rawtypes" })
-        @Override
-        public int compare(Object a, Object b) {
-            return ((Comparable)a).compareTo(b);
-        }
-    }
-
     static final class MaxRequestSubscription implements Consumer<Subscription> {
         @Override
         public void accept(Subscription t) {