test: remove unused tests #290

Job	Run time
downgrade	0s
test (1, ubuntu-latest, conv, default, true)	31m 11s
test (1, ubuntu-latest, dense, default, true)	19m 35s
test (1, ubuntu-latest, normalization, default, true)	1h 13m 2s
test (1, ubuntu-latest, misc, default, true)	46m 37s
test (1, ubuntu-latest, dense, default, false)	17m 14s
test (1, ubuntu-latest, misc, default, false)	38m 1s
test (1, macos-latest, all, default, true)	4h 59m 8s
test (1, windows-latest, all, default, true)	1h 57m 27s
	10h 42m 15s

Provide feedback