Remove cmp for now

include/VersionedMap.h

@@ -134,14 +134,6 @@ struct __attribute__((__visibility__("default"))) VersionedMap {
     bool operator==(const Iterator &) const;
     bool operator!=(const Iterator &) const;
 
-    /** 0 if this iterator's param1 is equal to the queried key, < 0 if this
-     * iterator's param1 is less than the queried key, and > 0 if this
-     * iterator's param1 is greater than the queried key. Iterating forward is
-     * treated as a query for the first mutation greater than this iterator's
-     * mutation, so will always result in a `cmp` > 0, and the converse for
-     * iterating backward (`cmp` < 0). */
-    int cmp() const;
-
     /** @private */
     struct Impl;