revert #15825

Author: vkarpov15

test/types/schema.test.ts

@@ -2086,11 +2086,3 @@ function gh15751() {
   const doc = new TestModel();
   expectType<Types.ObjectId>(doc.myId);
 }
-
-function gh15798() {
-  const schema1 = new Schema({ name: String }, { statics: { testMe() { } }, versionKey: false });
-  model('M1', schema1).testMe();
-
-  const schema2 = new Schema({ name: String }, { statics: { testMe() { } }, timestamps: true });
-  model('M2', schema2).testMe();
-}

types/inferschematype.d.ts

@@ -114,7 +114,7 @@ declare module 'mongoose' {
 
   type ResolveSchemaOptions<T> = MergeType<DefaultSchemaOptions, T>;
 
-  type ApplySchemaOptions<T, O = DefaultSchemaOptions> = Default__v<ResolveTimestamps<T, O>, O>;
+  type ApplySchemaOptions<T, O = DefaultSchemaOptions> = ResolveTimestamps<T, O>;
 
   type DefaultTimestampProps = {
     createdAt: NativeDate;