Revert "Support start-sorting and end-sorting directive"

This reverts commit 40620281cdb843e94c1b1d1e2c7f21aa01e0804d.

It was useless feature.
Sort dump responses for stable test result

It breaks table/column dependency resolution by dump command. But stable
test result will be important rather than it.

If we have more intelligent algorithm for stable test result, we should
replace this implementation with the intelligent algorithm.