Fabric: Removed unnecessary const_cast leftovers
Fabric: Removed unnecessary const_cast leftovers

Summary: Trivial. If it compiles, it works.

Reviewed By: JoshuaGross

Differential Revision: D14146579

fbshipit-source-id: 6f6895d1634709a5bde012850c5df756171320ab

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