Don't do timing tests on GHA #1205

Job	Run time
build (ubuntu-latest, 3.7, gcc, g++, /usr/local/lib)	12m 32s
build (ubuntu-latest, 3.7, gcc, g++, /usr/local/lib)	12m 32s
build (ubuntu-latest, 3.8, gcc, g++, /usr/local/lib)	11m 15s
build (ubuntu-latest, 3.8, gcc, g++, /usr/local/lib)	13m 33s
build (ubuntu-latest, 3.9, gcc, g++, /usr/local/lib)	11m 14s
build (ubuntu-latest, 3.9, gcc, g++, /usr/local/lib)	12m 35s
build (ubuntu-latest, 3.10, gcc, g++, /usr/local/lib)	11m 16s
build (ubuntu-latest, 3.10, gcc, g++, /usr/local/lib)	12m 13s
build (ubuntu-latest, 3.11, gcc, g++, /usr/local/lib)	11m 7s
build (ubuntu-latest, 3.11, gcc, g++, /usr/local/lib)	11m 17s
build (ubuntu-latest, 3.12, gcc, g++, /usr/local/lib)	10m 53s
build (ubuntu-latest, 3.12, gcc, g++, /usr/local/lib)	12m 27s
build (macos-latest, 3.10, cc, c++, /opt/homebrew/lib/)	8m 46s
build (macos-latest, 3.10, cc, c++, /opt/homebrew/lib/)	8m 46s
build (ubuntu-latest, 3.10, clang, clang++, /usr/local/lib/)	11m 14s
build (ubuntu-latest, 3.10, clang, clang++, /usr/local/lib/)	11m 37s
	3h 3m 17s

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