re-enable DS zero3 ci with updated transformers (axolotl-ai-cloud#2533)

Author: winglian

tests/e2e/multigpu/test_llama.py

@@ -621,12 +621,6 @@ def test_fsdp_qlora_prequant_packed(self, temp_dir):
             temp_dir + "/runs", "train/train_loss", 2.3, "Train Loss is too high"
         )
 
-    # TODO: remove skip once deepspeed regression is fixed
-    # see https://github.com/huggingface/transformers/pull/37324
-    @pytest.mark.skipif(
-        transformers_version_eq("4.51.0"),
-        reason="zero3 is not supported with transformers==4.51.0",
-    )
     @pytest.mark.parametrize(
         "gradient_accumulation_steps",
         [1, 2],