CI: remove duplicate mapping #61

Job	Run time
Run checks and tests over 22.0 and ubuntu-20.04	2m 51s
Run checks and tests over 22.1 and ubuntu-20.04	2m 19s
Run checks and tests over 22.2 and ubuntu-20.04	2m 6s
Run checks and tests over 22.3 and ubuntu-20.04	2m 7s
Run checks and tests over 23.0 and ubuntu-20.04	2m 31s
Run checks and tests over 23.1 and ubuntu-20.04	2m 20s
Run checks and tests over 23.2 and ubuntu-20.04	2m 34s
Run checks and tests over 23.3 and ubuntu-20.04	2m 25s
Run checks and tests over 24.0 and ubuntu-20.04	1m 41s
Run checks and tests over 24.1 and ubuntu-20.04	1m 38s
Run checks and tests over 24.2 and ubuntu-20.04	1m 36s
Run checks and tests over 24.3 and ubuntu-20.04	1m 53s
Run checks and tests over 25.0 and ubuntu-20.04	1m 32s
Run checks and tests over 25.1 and ubuntu-20.04	1m 19s
Run checks and tests over 25.2 and ubuntu-20.04	1m 22s
Run checks and tests over 25.3 and ubuntu-20.04	1m 31s
Run checks and tests over 26.0 and ubuntu-20.04	1m 28s
Run checks and tests over 26.1 and ubuntu-20.04	1m 17s
	34m 30s

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