Simplify scripts #2513

Job	Run time
ubuntu-clang-deprecated Debug	29m 5s
ubuntu-clang-deprecated Release	31m 37s
ubuntu-clang-quaternions Debug	35m 26s
ubuntu-clang-quaternions Release	31m 20s
ubuntu-clang-tbb Debug	41m 53s
ubuntu-clang-tbb Release	39m 56s
ubuntu-clang-cayleymap Debug	34m 34s
ubuntu-clang-cayleymap Release	36m 13s
ubuntu-clang-system-libs Debug	29m 5s
ubuntu-clang-system-libs Release	30m 58s
ubuntu-no-boost Debug	36m 23s
ubuntu-no-boost Release	32m 33s
ubuntu-no-unstable Debug	24m 9s
ubuntu-no-unstable Release	37m 23s
	7h 50m 35s

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