chore(utils): remove ResizeObserver component and useResizeObserverV1 implementation

BREAKING CHANGE: Removed `ResizeObserver` component and `useResizeObserverV1` implementation

Author: mlaursen

packages/utils/src/sizing/ResizeObserver.tsx

@@ -1,5 +1,4 @@
-/* eslint-disable no-underscore-dangle */
-import React, { useRef } from "react";
+import React from "react";
 import { act, render } from "@testing-library/react";
 import { ResizeObserver } from "@juggle/resize-observer";
 import { mocked } from "ts-jest/utils";
@@ -113,33 +112,6 @@ describe("useResizeObserver", () => {
     ResizeObserverMock.mockRestore();
   });
 
-  it("should use the v1 behavior if the first arg is an object", () => {
-    const warn = jest.spyOn(console, "warn");
-    warn.mockImplementation(() => {});
-    const onResize = jest.fn();
-    const Test = () => {
-      const ref = useRef<HTMLDivElement | null>(null);
-      useResizeObserver({
-        onResize,
-        target: ref,
-      });
-      return <div ref={ref} data-testid="div" />;
-    };
-
-    const { getByTestId, unmount } = render(<Test />);
-    const div = getByTestId("div");
-    expect(observe).toBeCalledWith(div);
-    expect(observe).toBeCalledTimes(1);
-
-    unmount();
-    expect(observe).toBeCalledTimes(1);
-    expect(unobserve).toBeCalledWith(div);
-    expect(unobserve).toBeCalledTimes(1);
-    expect(disconnect).toBeCalledTimes(1);
-
-    warn.mockRestore();
-  });
-
   it("should use the ref API if the first argument is a function", () => {
     const onResize = jest.fn();
     const Test = () => {