fix: remove autoInit at defaultIndex test

Author: malangfox

test/unit/Flicking.spec.ts

@@ -207,9 +207,7 @@ describe("Flicking", () => {
       });
 
       it("should initialized with panel which has index equal to defaultIndex when panels are not visible.", async () => {
-        const flicking = await createFlicking(El.DEFAULT_HORIZONTAL.setWidth(0), { defaultIndex: 1, autoInit: false });
-
-        await flicking.init();
+        const flicking = await createFlicking(El.DEFAULT_HORIZONTAL.setWidth(0), { defaultIndex: 1 });
 
         expect(flicking.index).to.equal(1);
       });