Remove fake OCMock group (#23546)
Remove fake OCMock group (#23546)

Summary:
We created a fake OCMock group like below which text color is red, actually we have another OCMock group in `RNTesterUnitTests`, so we can remove this.
![image](https://user-images.githubusercontent.com/5061845/53064665-9dcad300-3503-11e9-93c0-fd63b4395ba3.png)

[iOS] [Fixed] - Remove fake OCMock group in RNTester
Pull Request resolved: https://github.com/facebook/react-native/pull/23546

Differential Revision: D14146477

Pulled By: cpojer

fbshipit-source-id: 4878c8d40eab451f20bd7e223d93d212e514f26d

hoangpham95/react-native,facebook/react-native,exponent/react-native,janicduplessis/react-native,pandiaraj44/react-native,myntra/react-native,facebook/react-native,hoangpham95/react-native,facebook/react-native,javache/react-native,pandiaraj44/react-native,arthuralee/react-native,myntra/react-native,pandiaraj44/react-native,exponent/react-native,exponent/react-native,exponentjs/react-native,myntra/react-native,javache/react-native,janicduplessis/react-native,hoangpham95/react-native,javache/react-native,pandiaraj44/react-native,exponent/react-native,myntra/react-native,hammerandchisel/react-native,myntra/react-native,exponentjs/react-native,facebook/react-native,pandiaraj44/react-native,myntra/react-native,hammerandchisel/react-native,janicduplessis/react-native,hammerandchisel/react-native,myntra/react-native,arthuralee/react-native,arthuralee/react-native,exponent/react-native,hammerandchisel/react-native,exponentjs/react-native,javache/react-native,arthuralee/react-native,myntra/react-native,exponentjs/react-native,hoangpham95/react-native,pandiaraj44/react-native,janicduplessis/react-native,hoangpham95/react-native,javache/react-native,exponentjs/react-native,facebook/react-native,javache/react-native,exponentjs/react-native,exponent/react-native,hammerandchisel/react-native,hammerandchisel/react-native,janicduplessis/react-native,janicduplessis/react-native,janicduplessis/react-native,pandiaraj44/react-native,pandiaraj44/react-native,arthuralee/react-native,hammerandchisel/react-native,janicduplessis/react-native,facebook/react-native,hoangpham95/react-native,javache/react-native,hammerandchisel/react-native,hoangpham95/react-native,facebook/react-native,exponent/react-native,hoangpham95/react-native,facebook/react-native,javache/react-native,exponent/react-native,exponentjs/react-native,facebook/react-native,myntra/react-native,javache/react-native,exponentjs/react-native