Remove the calculation of formatted time string from Status #434

Job	Run time
Build MDANSE and run tests on ubuntu-20.04	3m 2s
Build MDANSE and run tests on ubuntu-20.04	2m 54s
Build MDANSE and run tests on ubuntu-20.04	2m 46s
Build MDANSE and run tests on ubuntu-20.04	3m 9s
Build MDANSE and run tests on windows-2019	3m 47s
Build MDANSE and run tests on windows-2019	4m 45s
Build MDANSE and run tests on windows-2019	3m 56s
Build MDANSE and run tests on windows-2019	3m 45s
Build MDANSE and run tests on macOS-11	5m 48s
Build MDANSE and run tests on macOS-11	8m 51s
Build MDANSE and run tests on macOS-11	6m 3s
Build MDANSE and run tests on macOS-11	5m 49s
	54m 35s

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