Remove setting global tracer provider to avoid non-expected spans are… #1188

Job	Run time
artifacts (ghcr.io/pipe-cd, helloworld)	3m 8s
artifacts (ghcr.io/pipe-cd, launcher)	3m 4s
artifacts (ghcr.io/pipe-cd, launcher-okd)	3m 26s
artifacts (ghcr.io/pipe-cd, pipecd)	4m 49s
artifacts (ghcr.io/pipe-cd, piped)	3m 7s
artifacts (ghcr.io/pipe-cd, piped-okd)	3m 7s
artifacts (ghcr.io/pipe-cd, pipectl)	3m 3s
artifacts (gcr.io/pipecd, helloworld)	3m 11s
artifacts (gcr.io/pipecd, launcher)	3m 32s
artifacts (gcr.io/pipecd, piped)	3m 4s
release-quickstart-manifests	0s
	33m 31s

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