[BUG] Properly clean system cache when closing instances #137

Job	Run time
test (3.8, ubuntu-latest, --ignore-glob 'chromadb/test/property/*' --ignore='chromadb/test/test_c...	1m 34s
test (3.8, ubuntu-latest, chromadb/test/property/test_add.py)	1m 31s
test (3.8, ubuntu-latest, chromadb/test/test_cli.py)	1m 42s
test (3.8, ubuntu-latest, chromadb/test/auth/test_simple_rbac_authz.py)	1m 45s
test (3.8, ubuntu-latest, chromadb/test/property/test_collections.py)	1m 49s
test (3.8, ubuntu-latest, chromadb/test/property/test_cross_version_persist.py)	1m 43s
test (3.8, ubuntu-latest, chromadb/test/property/test_embeddings.py)	1m 37s
test (3.8, ubuntu-latest, chromadb/test/property/test_filtering.py)	1m 35s
test (3.8, ubuntu-latest, chromadb/test/property/test_persist.py)	1m 48s
test (3.8, windows-latest, --ignore-glob 'chromadb/test/property/*' --ignore='chromadb/test/test_...	1m 36s
test (3.8, windows-latest, chromadb/test/property/test_add.py)	1m 36s
test (3.8, windows-latest, chromadb/test/test_cli.py)	1m 36s
test (3.8, windows-latest, chromadb/test/auth/test_simple_rbac_authz.py)	1m 34s
test (3.8, windows-latest, chromadb/test/property/test_collections.py)	1m 37s
test (3.8, windows-latest, chromadb/test/property/test_cross_version_persist.py)	1m 37s
test (3.8, windows-latest, chromadb/test/property/test_embeddings.py)	1m 37s
test (3.8, windows-latest, chromadb/test/property/test_filtering.py)	1m 37s
test (3.8, windows-latest, chromadb/test/property/test_persist.py)	1m 37s
	29m 31s

Provide feedback