Revert "Fix line delimited JSON response"

This reverts commit d2f75a3040.

Conflicts:
	integration-cli/docker_api_events_test.go

Docker-DCO-1.1-Signed-off-by: Jessica Frazelle <jess@docker.com> (github: jfrazelle)

api/client/utils.go

@@ -168,7 +168,7 @@ func (cli *DockerCli) streamHelper(method, path string, setRawTerminal bool, in
 	}
 
 	if api.MatchesContentType(resp.Header.Get("Content-Type"), "application/json") {
-		return utils.DisplayJSONMessagesStream(resp.Body, stdout, cli.terminalFd, cli.isTerminal)
+		return utils.DisplayJSONMessagesStream(resp.Body, stdout, cli.outFd, cli.isTerminalOut)
 	}
 	if stdout != nil || stderr != nil {
 		// When TTY is ON, use regular copy

api/server/server.go

@@ -297,8 +297,6 @@ func getEvents(eng *engine.Engine, version version.Version, w http.ResponseWrite
 	}
 
 	var job = eng.Job("events")
-	// lineDelimited JSON events was added #7047
-	job.SetenvBool("lineDelim", version.GreaterThanOrEqualTo("1.15"))
 	streamJSON(job, w, true)
 	job.Setenv("since", r.Form.Get("since"))
 	job.Setenv("until", r.Form.Get("until"))