Commit Briefs
tests: update datetime tests (master, origin/master)
tests: remove unneeded tests
The tests `tarantool_crud.lua` and `vinyl.lua` has beed replaced with `test_engine.lua`, see [1]. 1. https://github.com/tarantool/tarantool/commit/33670eae8afe425a0cd17067a114e7130b58bbd7