Delete best practicese page that had no new info #5680

Job	Run time
build-and-check	2m 53s
test-integration-packages/internal	1m 6s
test-integration-packages/billing	1m 8s
test-integration-sdk	33s
test-integration-cli	40s
test-integration-common	44s
test-packages/agent-runtime	41s
test-packages/internal	47s
test-integration-web	40s
test-cli	59s
test-common	39s
test-integration-packages/agent-runtime	42s
test-packages/billing	47s
test-web	46s
test-sdk	41s
test-.agents	42s
	14m 28s

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