Remove obsoleted tests. #6317

Job	Run time
Build dependencies	3m 13s
bittide-instances hardware-in-the-loop test matrix generation	24s
bittide-instances synthesis matrix generation	24s
license-check	17s
Basic linting	1m 26s
Rust Lints	38s
Bittide tests	4m 57s
bittide-experiments unittests	1m 8s
bittide-instances doctests	1m 18s
bittide-instances unittests	1m 38s
Firmware Support Unit Tests	2m 40s
synth (safeDffSynchronizer, hdl)	1m 36s
Firmware Limit Checks	1m 28s
synth (swCcTopologyTest, test)	18m 15s
synth (linkConfigurationTest, test)	12m 39s
synth (transceiversUpTest, test)	22m 39s
synth (vexRiscvTcpTest, test)	7m 43s
synth (vexRiscvTest, test)	6m 56s
HITL (swCcTopologyTest, test)	11m 11s
HITL (linkConfigurationTest, test)	1m 36s
HITL (transceiversUpTest, test)	3m 7s
HITL (vexRiscvTcpTest, test)	1m 54s
HITL (vexRiscvTest, test)	2m 3s
Generate clock control report	4m 2s
All jobs finished	17s
	1h 53m 29s

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