Removes a duplicate door when metastation rolls a singularity engine #5630

Job	Run time
Collect data for other tasks	17s
Lint with OpenDream	35s
Run Linters	2m 42s
Compile Maps	2m 7s
Windows Build	1m 56s
Integration Tests (deltastation) / run_integration_tests	7m 26s
Integration Tests (icebox) / run_integration_tests	8m 4s
Integration Tests (metastation) / run_integration_tests	6m 57s
Integration Tests (kilostation) / run_integration_tests	6m 52s
Integration Tests (multiz_debug) / run_integration_tests	6m 22s
Integration Tests (northstar) / run_integration_tests	8m 2s
Integration Tests (runtimestation) / run_integration_tests	6m 10s
Integration Tests (tramstation) / run_integration_tests	7m 19s
Alternate Tests (515, 1627, runtimestation) / run_integration_tests	6m 17s
Check Alternate Tests	1s
Compare Screenshot Tests	35s
	1h 11m 42s

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