Ref issue #158 remove test cases.
Ref issue #158 remove test cases.

The behavior of these removed test cases providing the results
which are different from different compilers and OSs.
The answers to judge the result are now hard-coded,
and we need smarter test cases which are able to run with different
compilers and on different OSs.

solvcon/solvcon,solvcon/solvcon,yungyuc/solvcon,yungyuc/solvcon,solvcon/solvcon,yungyuc/solvcon,yungyuc/solvcon,yungyuc/solvcon,solvcon/solvcon,solvcon/solvcon,yungyuc/solvcon,solvcon/solvcon