Revert "feat: Add chat with web data (#450)"

packages/create-llama/create-app.ts

packages/create-llama/helpers/index.ts

packages/create-llama/helpers/python.ts

packages/create-llama/helpers/types.ts

packages/create-llama/index.ts

packages/create-llama/questions.ts

...-llama/templates/components/loaders/python/file/loader.py

...e-llama/templates/components/loaders/python/web/loader.py

...a/templates/components/vectordbs/python/mongo/generate.py

...ma/templates/components/vectordbs/python/none/generate.py

...lama/templates/components/vectordbs/python/pg/generate.py