CI: remove lint job #1496

Job	Run time
Test Package (Python 3.10, Django 4.2)	4m 41s
Test Demo Relying Party (18.x)	15s
Test Demo Relying Party (20.x)	13s
Test Package (Python 3.10, Django 5.0)	2m 46s
Test Package (Python 3.10, Django 5.1)	3m 15s
Test Package (Python 3.10, Django main)	3m 50s
Test Package (Python 3.11, Django 4.2)	4m 40s
Test Package (Python 3.11, Django 5.0)	2m 43s
Test Package (Python 3.11, Django 5.1)	3m 15s
Test Package (Python 3.11, Django main)	3m 48s
Test Package (Python 3.12, Django 4.2)	2m 27s
Test Package (Python 3.12, Django 5.0)	2m 49s
Test Package (Python 3.12, Django 5.1)	3m 21s
Test Package (Python 3.12, Django main)	3m 49s
Test Package (Python 3.8, Django 4.2)	2m 25s
Test Package (Python 3.9, Django 4.2)	2m 25s
Test successful	1s
	46m 43s

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