Remove pipelines from llm-app and update website (#9418) #1552

Job	Run time
test-ubuntu / Build packages (3.10, ubuntu-22.04)	10m 28s
test-ubuntu / ubuntu-22.04 pytest	32m 2s
test-ubuntu / ubuntu-22.04 pytest	22m 45s
test-ubuntu / Notify_on_failure	0s
	1h 5m 15s

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