chore(infra): drop langchain_v1 pr lint (#33830)

Just use `langchain`

Author: mdrxy

.github/workflows/pr_lint.yml

@@ -79,8 +79,7 @@ jobs:
             core
             cli
             langchain
-            langchain_v1
-            langchain-classic
+            langchain_classic
             model-profiles
             standard-tests
             text-splitters