Remove extra stop token in phi config (#1067)

Author: nsarrazin

.env.template

@@ -207,7 +207,7 @@ MODELS=`[
       "websiteUrl": "https://azure.microsoft.com/en-us/blog/introducing-phi-3-redefining-whats-possible-with-slms/",
       "preprompt": "",
       "parameters": {
-        "stop": ["</s>", "<|end|>", "<|endoftext|>", "<|assistant|>"],
+        "stop": ["<|end|>", "<|endoftext|>", "<|assistant|>"],
         "max_new_tokens": 1024,
         "truncate": 3071
       },