[pkg/stanza] Remove deprecated attrs package (#31128) #47

Job	Run time
collector-build	7m 44s
docker-build	7m 28s
kubernetes-test-matrix (v1.26.0, receiver/k8sclusterreceiver)	5m 2s
kubernetes-test-matrix (v1.26.0, processor/k8sattributesprocessor)	3m 25s
kubernetes-test-matrix (v1.26.0, receiver/kubeletstatsreceiver)	4m 15s
kubernetes-test-matrix (v1.26.0, receiver/k8sobjectsreceiver)	3m 11s
kubernetes-test-matrix (v1.25.3, receiver/k8sclusterreceiver)	4m 47s
kubernetes-test-matrix (v1.25.3, processor/k8sattributesprocessor)	3m 46s
kubernetes-test-matrix (v1.25.3, receiver/kubeletstatsreceiver)	4m 16s
kubernetes-test-matrix (v1.25.3, receiver/k8sobjectsreceiver)	3m 28s
kubernetes-test-matrix (v1.24.7, receiver/k8sclusterreceiver)	4m 45s
kubernetes-test-matrix (v1.24.7, processor/k8sattributesprocessor)	3m 30s
kubernetes-test-matrix (v1.24.7, receiver/kubeletstatsreceiver)	4m 23s
kubernetes-test-matrix (v1.24.7, receiver/k8sobjectsreceiver)	3m 27s
kubernetes-test-matrix (v1.23.13, receiver/k8sclusterreceiver)	5m 1s
kubernetes-test-matrix (v1.23.13, processor/k8sattributesprocessor)	3m 41s
kubernetes-test-matrix (v1.23.13, receiver/kubeletstatsreceiver)	4m 47s
kubernetes-test-matrix (v1.23.13, receiver/k8sobjectsreceiver)	3m 19s
supervisor-test	48s
kubernetes-test	1s
	1h 21m 4s

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