Remove unused WorkflowStatus view and urlpattern #106

Job	Run time
test-sqlite (3.9, Django>=4.1,<4.2)	11m 43s
test-postgres (3.8, Django>=3.2,<3.3, false)	19m 35s
test-postgres (3.11, Django>=4.2,<4.3, postgres:12, notz, false)	16m 58s
test-postgres (3.10, Django>=4.1,<4.2, false, emailuser)	18m 46s
test-postgres (3.10, git+https://github.com/django/django.git@stable/4.2.x#egg=Django, true, post...	22m 55s
test-postgres (3.10, git+https://github.com/django/django.git@main#egg=Django, true, postgres:12,...	22m 24s
test-postgres-elasticsearch7 (3.8, Django>=4.1,<4.2, false)	10m 28s
test-postgres-elasticsearch6 (3.8, Django>=3.2,<3.3)	7m 13s
test-mysql (3.8, Django>=3.2,<3.3, false)	21m 39s
test-mysql (3.10, Django>=4.2,<4.3, false)	39m 51s
test-sqlite-elasticsearch5 (3.8, Django>=3.2,<3.3)	10m 25s
test-sqlite-elasticsearch8 (3.10, Django>=4.2,<4.3, emailuser)	6m 59s
coverage	31s
	3h 29m 27s

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