Back out "Add example of LLava encoder" (#2420)

Summary:
Pull Request resolved: #2420

It breaks CI since LLava is not installed into the repo yet. Loading a full LLava model may put load in the CI. Reverting it till a better solution is found.

Original commit changeset: 57f79a925f40

Original Phabricator Diff: D54812717

bypass-github-export-checks

Reviewed By: Gasoonjia, cccclai

Differential Revision: D54880586

fbshipit-source-id: 5b3667d0ef6c86bc52361b32101a99a9157dd750

Author: Martin Yuan

examples/models/__init__.py

@@ -26,7 +26,6 @@
     "ic4": ("inception_v4", "InceptionV4Model"),
     "resnet18": ("resnet", "ResNet18Model"),
     "resnet50": ("resnet", "ResNet50Model"),
-    "llava": ("llava", "LlavaModel"),
 }
 
 __all__ = [