remove old, commented out code

chain.py

@@ -119,7 +119,6 @@ class ChainBuilder:
         # Prompt Template for generation
         prompt = ChatPromptTemplate.from_messages(
             [
-                # ("system", self.llm_config.get("llm_prompt_template")), # add current date to the date_str var in system prompt
                 ("system", self.get_system_prompt()),
                 # *** Note: This chain does not compress the history, so very long converastions can overflow the context window. TODO
                 # We need to at some point chop this history down to fixed amount of recent messages
@@ -174,15 +173,6 @@ class ChainBuilder:
         return get_and_cache_model(endpoint, extra_params)
 
     def build_chain(self):
-        # model = self.get_model()
-        # prompt = self.get_prompt()
-        # format_context = self.format_context()
-        # vector_search_as_retriever = self.get_retriever()
-        # query_rewrite_prompt = self.get_query_rewrite_prompt()
-
-        def get_date():
-            return datetime.datetime.now().strftime("%B %d, %Y")
-
         # RAG Chain
         chain = (
             {