[processor/k8sattributesprocessor] cleanup duplicated functions (#42636) #33

Job	Run time
setup-environment (macos-14)	7m 2s
setup-environment (macos-15)	5m 10s
darwin-build-unittest-binary (macos-14)	2m 53s
darwin-build-unittest-binary (macos-15)	3m 15s
darwin-unittest-matrix (macos-13)	1m 5s
darwin-unittest	1m 9s
	20m 34s

Provide feedback