1 files changed, 0 insertions, 4 deletions
diff --git a/Firestore/third_party/Immutable/FSTImmutableSortedSet.m b/Firestore/third_party/Immutable/FSTImmutableSortedSet.m
index a23068e..1b63c2c 100644
--- a/Firestore/third_party/Immutable/FSTImmutableSortedSet.m
+++ b/Firestore/third_party/Immutable/FSTImmutableSortedSet.m
@@ -76,10 +76,6 @@ NS_ASSUME_NONNULL_BEGIN
   return [self.dictionary maxKey];
 }
 
-- (id)predecessorObject:(id)entry {
-  return [self.dictionary predecessorKey:entry];
-}
-
 - (NSUInteger)indexOfObject:(id)object {
   return [self.dictionary indexOfKey:object];
 }