remove redundant model registration

modeling_emcoder.py

@@ -295,10 +295,4 @@ class EmCoder(PreTrainedModel):
             logits=logits,
             hidden_states=None,
             attentions=None,
-        )
-
-try:
-    AutoConfig.register("emcoder", EmCoderConfig)
-    AutoModelForSequenceClassification.register(EmCoderConfig, EmCoder)
-except ValueError:
-    pass
+        )