[MIRROR] Remove several functions from collections.js which have ES5 … #6528

Job	Run time
Collect data for other tasks	14s
Run Linters	3m 11s
Lint with OpenDream	36s
Compile Maps	3m 24s
Windows Build	1m 50s
Integration Tests (birdshot) / run_integration_tests	11m 35s
Integration Tests (blueshift) / run_integration_tests	11m 55s
Integration Tests (deltastation) / run_integration_tests	11m 37s
Integration Tests (gateway_test) / run_integration_tests	12m 37s
Integration Tests (icebox) / run_integration_tests	11m 42s
Integration Tests (metastation) / run_integration_tests	11m 23s
Integration Tests (kilostation2) / run_integration_tests	11m 8s
Integration Tests (multiz_debug) / run_integration_tests	10m 39s
Integration Tests (nssjourney) / run_integration_tests	11m 11s
Integration Tests (northstar) / run_integration_tests	13m 8s
Integration Tests (ouroboros) / run_integration_tests	11m 47s
Integration Tests (runtimestation) / run_integration_tests	10m 19s
Integration Tests (voidraptor) / run_integration_tests	11m 19s
Alternate Tests (515, 1627, runtimestation) / run_integration_tests	11m 12s
Integration Tests (tramstation) / run_integration_tests	11m 42s
Check Alternate Tests	1s
Compare Screenshot Tests	19s
	3h 2m 49s

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