Remove unavailable custom action, and install editable #89

Job	Run time
pylint	17s
test_on_EOL_Pythons (3.6)	25s
pre-commit	9s
test_on_EOL_Pythons (3.7)	5m 36s
test_on_EOL_Pythons (3.5)	27s
test_on_EOL_Pythons (3.8)	4m 54s
test_on_EOL_Pythons (2.7)	24s
test_on_supported_Pythons (3.9, ubuntu-24.04)	4m 7s
test_on_supported_Pythons (3.10, macos-latest)	2m 58s
test_on_supported_Pythons (3.9, macos-latest)	3m 11s
test_on_supported_Pythons (3.10, windows-latest)	4m 7s
test_on_supported_Pythons (3.11, ubuntu-24.04)	3m 23s
test_on_supported_Pythons (3.12, windows-latest)	4m 10s
test_on_supported_Pythons (3.12, macos-latest)	2m 46s
test_on_supported_Pythons (3.10, ubuntu-24.04)	4m 9s
test_on_supported_Pythons (3.11, macos-latest)	2m 18s
test_on_supported_Pythons (3.9, windows-latest)	4m 8s
test_on_supported_Pythons (3.14.0-beta.4, windows-latest)	5m 49s
test_on_supported_Pythons (3.14.0-beta.4, ubuntu-24.04)	3m 56s
test_on_supported_Pythons (3.13, windows-latest)	3m 51s
test_on_supported_Pythons (3.13, ubuntu-24.04)	3m 27s
test_on_supported_Pythons (3.11, windows-latest)	4m 5s
test_on_supported_Pythons (3.14.0-beta.4, macos-latest)	3m 3s
test_on_supported_Pythons (3.13, macos-latest)	2m 30s
test_on_supported_Pythons (3.12, ubuntu-24.04)	4m 3s
	1h 18m 13s

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