[tests] remove test_sdpa_equivalence (redundant) (#37911)

* rm test_sdpa_equivalence

* make fixup

---------

Co-authored-by: Yih-Dar <2521628+ydshieh@users.noreply.github.com>

tests/models/cohere2/test_modeling_cohere2.py

@@ -127,10 +127,6 @@ class Cohere2ModelTest(CohereModelTest, unittest.TestCase):
     def test_generate_continue_from_inputs_embeds(self):
         pass
 
-    @unittest.skip("Cohere2's eager attn/sdpa attn outputs are expected to be different")
-    def test_sdpa_equivalence(self):
-        pass
-
 
 @slow
 @require_read_token