Revert "upgrade to use lambda v2 payload format" #626

Job	Run time
build (aws-lambda-http)	57s
build (aws-lambda-custom-runtime)	58s
build (aws-lambda-events)	1m 9s
build (bearer-auth)	1m 23s
build (graalvm)	53s
build (hello-world)	51s
build (hexagonal)	58s
build (hotwire)	57s
build (http4k-connect)	1m 36s
build (graphql)	48s
build (json-api)	1m 1s
build (oauth)	51s
build (openapi)	49s
build (quarkus)	3m 4s
build (react-app)	1m 33s
build (typesafe-configuration)	51s
build (web-content)	48s
build (websockets)	50s
	20m 17s

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