[git] Remove CocoaPod entries from git-lfs list (#11922)
[git] Remove CocoaPod entries from git-lfs list (#11922)

Why: we no longer commit pods to the repository and don't need to download the large ones from Git LFS.

How: updated .gitattributes to remove the LFS entries

Test plan: make sure `git lfs pull` doesn't break
exponent/exponent,exponentjs/exponent,exponentjs/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent,exponentjs/exponent,exponentjs/exponent,exponent/exponent,exponent/exponent,exponent/exponent,exponent/exponent,exponentjs/exponent