Clean raw data metrics that do not receive measures #696

Job	Run time
check (build)	50s
doc (docs)	1m 42s
check (pep8)	41s
doc (docs-gnocchi-web)	1m 39s
test (py39, postgresql-file-upgrade-from-4.4)	2m 32s
test (py39, mysql-file)	2m 43s
test (py39, mysql-file-sqlalchemy14)	2m 37s
test (py39, mysql-swift)	2m 37s
test (py39, mysql-s3)	2m 37s
test (py39, postgresql-file)	2m 33s
test (py39, postgresql-file-sqlalchemy14)	2m 32s
test (py39, postgresql-swift)	1m 43s
test (py39, postgresql-s3)	1m 40s
test (py311, postgresql-file-upgrade-from-4.4)	2m 20s
test (py311, mysql-file)	2m 34s
test (py311, mysql-file-sqlalchemy14)	2m 32s
test (py311, mysql-swift)	2m 37s
test (py311, mysql-s3)	2m 38s
test (py311, postgresql-file)	2m 38s
test (py311, postgresql-file-sqlalchemy14)	2m 29s
test (py311, postgresql-swift)	2m 34s
test (py311, postgresql-s3)	2m 38s
	49m 26s

Provide feedback