CLN: remove and udpate for outdated _item_cache #24285

Job	Run time
Linux-32-bit	18m 30s
Pyodide build	23m 53s
Linux-Musl	15m 33s
python-dev	0s
windows-latest actions-313.yaml	46m 43s
macos-14 actions-311.yaml	21m 6s
windows-latest actions-312.yaml	39m 27s
macos-14 actions-313.yaml	21m 50s
windows-latest actions-310.yaml	36m 9s
windows-latest actions-311.yaml	39m 6s
macos-14 actions-310.yaml	23m 20s
macos-13 actions-311.yaml	36m 15s
macos-13 actions-310.yaml	34m 16s
macos-13 actions-312.yaml	30m 9s
macos-14 actions-312.yaml	23m 22s
macos-13 actions-313.yaml	34m 2s
ubuntu-24.04-arm actions-311.yaml	34m 15s
Minimum Versions	23m 21s
ubuntu-24.04 actions-312.yaml	44m 9s
Downstream Compat	6m 2s
ubuntu-24.04-arm actions-313.yaml	34m 44s
Pypy	1m 46s
Future infer strings	45m 15s
ubuntu-24.04 actions-310.yaml	47m 23s
Pyarrow Nightly	20m 8s
Future infer strings (without pyarrow)	39m 35s
ubuntu-24.04 actions-311.yaml	42m 27s
ubuntu-24.04-arm actions-310.yaml	36m 11s
Locale: it_IT	24m 6s
ubuntu-24.04-arm actions-312.yaml	35m 56s
ubuntu-24.04 actions-313.yaml	47m 59s
Locale: zh_CN	23m 33s
Freethreading	21m 3s
Numpy Dev	16m 52s
	16h 28m 26s

Provide feedback