Clean raw data metrics that do not receive measures #704

Job	Run time
check (build)	46s
check (pep8)	44s
doc (docs)	1m 38s
doc (docs-gnocchi-web)	1m 41s
test (py39, postgresql-file-upgrade-from-4.4)	3m 39s
test (py39, mysql-file)	3m 24s
test (py39, mysql-file-sqlalchemy14)	3m 6s
test (py39, mysql-swift)	4m 2s
test (py39, mysql-s3)	4m 11s
test (py39, postgresql-file)	3m 7s
test (py39, postgresql-file-sqlalchemy14)	2m 55s
test (py39, postgresql-swift)	3m 28s
test (py39, postgresql-s3)	3m 50s
test (py311, postgresql-file-upgrade-from-4.4)	4m 25s
test (py311, mysql-file)	3m 3s
test (py311, mysql-file-sqlalchemy14)	3m 8s
test (py311, mysql-swift)	3m 42s
test (py311, mysql-s3)	3m 45s
test (py311, postgresql-file)	2m 50s
test (py311, postgresql-file-sqlalchemy14)	3m 7s
test (py311, postgresql-swift)	3m 40s
test (py311, postgresql-s3)	3m 36s
	1h 7m 47s

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