fix(query): remove count() and findOneAndRemove() from query chai…

…ning

Fix #14689

lib/query.js

@@ -153,6 +153,12 @@ function Query(conditions, options, model, collection) {
 
 Query.prototype = new mquery();
 Query.prototype.constructor = Query;
+
+// Remove some legacy methods that we removed in Mongoose 8, but
+// are still in mquery 5.
+Query.prototype.count = undefined;
+Query.prototype.findOneAndRemove = undefined;
+
 Query.base = mquery.prototype;
 
 /*!