remove duplicated code about hints in mcsat #507

Job	Run time
ubuntu-latest\|debug\|--enable-mcsat\|CC=gcc CXX=g++	8m 32s
ubuntu-latest\|debug\|--enable-mcsat\|CC=clang CXX=clang++	9m 19s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=gcc CXX=g++	4m 23s
ubuntu-latest\|debug\|--enable-thread-safety\|CC=clang CXX=clang++	5m 1s
ubuntu-latest\|release\|--enable-mcsat\|CC=gcc CXX=g++	5m 51s
ubuntu-latest\|release\|--enable-mcsat\|CC=clang CXX=clang++	6m 12s
ubuntu-latest\|release\|--enable-thread-safety\|CC=gcc CXX=g++	2m 45s
ubuntu-latest\|release\|--enable-thread-safety\|CC=clang CXX=clang++	3m 12s
ubuntu-latest\|gcov\|--enable-mcsat\|CC=gcc CXX=g++	9m 5s
ubuntu-latest\|debug\|--enable-thread-safety --enable-mcsat\|CC=gcc CXX=g++	8m 42s
	1h 3m 2s

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