Remove all references to optlink #250

Job	Run time
Default release build / Build documentation for all repos	3m 5s
Default release build / Build release for linux on ubuntu-20.04	8m 41s
Default release build / Build release for osx on macos-12	5m 20s
Default release build / Build release for windows on windows-2019	13m 3s
Default release build / Build release for freebsd on ubuntu-latest	5m 32s
Validate results of build_release_template.yml (windows-latest, windows, dmd.stable.windows.7z)	1m 2s
Validate results of build_release_template.yml (macos-latest, osx, dmd.stable.osx.tar.xz)	1m 1s
Validate outputs of build_release_template.yml	1s
Validate results of build_release_template.yml (ubuntu-latest, linux, dmd.stable.linux.tar.xz)	8s
Validate results of build_release_template.yml (ubuntu-latest, freebsd, dmd.stable.freebsd-64.tar...	34s
	38m 27s

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