Update chat_template.jinja

chat_template.jinja

@@ -1 +1 @@
-{{ bos_token if bos_token is defined else '' }}{% for message in messages %}<|im_start|>{{ message['role'] }}<|im_sep|>{{ message['content'] }}<|im_end|>{% endfor %}{% if add_generation_prompt %}<|im_start|>assistant<|im_sep|>{% endif %}
+{% for message in messages %}<|im_start|>{{ message['role'] }}<|im_sep|>{{ message['content'] }}<|im_end|>{% endfor %}{% if add_generation_prompt %}<|im_start|>assistant<|im_sep|>{% endif %}