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docs: Remove redundant line (#29698)

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If I understand it correctly, chain1 is never used.
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Jun He 2025-02-10 07:53:21 -06:00 committed by GitHub
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docs/docs/how_to/functions.ipynb
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@ -99,8 +99,6 @@
"\n",
"prompt = ChatPromptTemplate.from_template(\"what is {a} + {b}\")\n",
"\n",
"chain1 = prompt | model\n",
"\n",
"chain = (\n",
" {\n",
" \"a\": itemgetter(\"foo\") | RunnableLambda(length_function),\n",