remove duplicated code about hints in mcsat #508

Job	Run time
ubuntu-latest\|debug\|--enable-mcsat\|CC=gcc CXX=g++	8m 54s
ubuntu-latest\|debug\|--enable-mcsat\|CC=clang CXX=clang++	10m 2s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=gcc CXX=g++	4m 32s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=clang CXX=clang++	4m 42s
ubuntu-latest\|release\|--enable-mcsat\|CC=gcc CXX=g++	5m 44s
ubuntu-latest\|release\|--enable-mcsat\|CC=clang CXX=clang++	6m 15s
ubuntu-latest\|release\|--enable-thread-safety\|CC=gcc CXX=g++	2m 49s
ubuntu-latest\|release\|--enable-thread-safety\|CC=clang CXX=clang++	3m 22s
ubuntu-latest\|gcov\|--enable-mcsat\|CC=gcc CXX=g++	8m 46s
ubuntu-latest\|debug\|--enable-thread-safety --enable-mcsat\|CC=gcc CXX=g++	8m 43s
	1h 3m 49s

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