Ports the removal of proc_holders from tg after 2 years of it not being done #4537

Job	Run time
Collect data for other tasks	10s
Run Linters	1m 54s
Compile Maps	1m 50s
Windows Build	1m 25s
Alternate Tests	0s
Integration Tests (boxstation) / run_integration_tests	2m 59s
Integration Tests (corgstation) / run_integration_tests	3m 8s
Integration Tests (deltastation) / run_integration_tests	3m 11s
Integration Tests (echostation) / run_integration_tests	3m 20s
Integration Tests (kilostation) / run_integration_tests	3m 6s
Integration Tests (flandstation) / run_integration_tests	3m 15s
Integration Tests (metastation) / run_integration_tests	3m 8s
Integration Tests (multiz_debug) / run_integration_tests	2m 55s
Check Alternate Tests	0s
Integration Tests (radstation) / run_integration_tests	3m 3s
Integration Tests (runtimestation) / run_integration_tests	2m 50s
Compare Screenshot Tests	11s
	36m 25s

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