RN: Delete Shallow Renderer Cases in Modal-test.js (#44970)

Summary:
Pull Request resolved: https://github.com/facebook/react-native/pull/44970

These Jest unit test cases were making assertions about shallow rendering, but that shallow rendering is now deprecated.

Changelog:
[Internal]

Reviewed By: robhogan

Differential Revision: D58643058

fbshipit-source-id: 75c95b3ef8f9c481b50d90bf195ba3bd90196f0b

packages/react-native/Libraries/Image/__tests__/Image-test.js

@@ -22,24 +22,12 @@ const Image = require('../Image');
 const ImageInjection = require('../ImageInjection');
 const React = require('react');
 
-describe('<Image />', () => {
+describe('Image', () => {
   it('should render as <Image> when mocked', () => {
     const instance = render.create(<Image source={{uri: 'foo-bar.jpg'}} />);
     expect(instance).toMatchSnapshot();
   });
 
-  it('should shallow render as <Image> when mocked', () => {
-    const output = render.shallow(<Image source={{uri: 'foo-bar.jpg'}} />);
-    expect(output).toMatchSnapshot();
-  });
-
-  it('should shallow render as <ForwardRef(Image)> when not mocked', () => {
-    jest.dontMock('../Image');
-
-    const output = render.shallow(<Image source={{uri: 'foo-bar.jpg'}} />);
-    expect(output).toMatchSnapshot();
-  });
-
   it('should render as <RCTImageView> when not mocked', () => {
     jest.dontMock('../Image');
 

packages/react-native/Libraries/Image/__tests__/__snapshots__/Image-test.js.snap

@@ -1,6 +1,6 @@
 // Jest Snapshot v1, https://goo.gl/fbAQLP
 
-exports[`<Image /> should render as <Image> when mocked 1`] = `
+exports[`Image should render as <Image> when mocked 1`] = `
 <Image
   source={
     Object {
@@ -10,7 +10,7 @@ exports[`<Image /> should render as <Image> when mocked 1`] = `
 />
 `;
 
-exports[`<Image /> should render as <RCTImageView> when not mocked 1`] = `
+exports[`Image should render as <RCTImageView> when not mocked 1`] = `
 <RCTImageView
   accessibilityState={
     Object {
@@ -39,23 +39,3 @@ exports[`<Image /> should render as <RCTImageView> when not mocked 1`] = `
   }
 />
 `;
-
-exports[`<Image /> should shallow render as <ForwardRef(Image)> when not mocked 1`] = `
-<Image
-  source={
-    Object {
-      "uri": "foo-bar.jpg",
-    }
-  }
-/>
-`;
-
-exports[`<Image /> should shallow render as <Image> when mocked 1`] = `
-<Image
-  source={
-    Object {
-      "uri": "foo-bar.jpg",
-    }
-  }
-/>
-`;