fix: Clean up attributes for traces and metrics (#12677) #722

Job	Run time
filter	1m 1s
unmanaged_dependency_check	7m 39s
build(8) for gapic-generator-java	11m 40s
gapic-generator-java-bom	2m 47s
build(8) except for gapic-generator-java	4m 20s
build(21) except self-service clients	12m 47s
build (11)	15m 12s
build(8) for showcase	10m 0s
showcase (17)	10m 37s
showcase (11)	10m 25s
build (17)	14m 17s
build(25) except self-service clients	12m 52s
showcase (25)	10m 44s
showcase (21)	10m 33s
dependency_analyzer_unit_test	46s
showcase-clirr	0s
	2h 15m 40s

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