Revert "add new version of CommandLineParser. add empty docs"

Revert "add new version of CommandLineParser. add empty docs"

This reverts commit 54a202b3d522f19a05993998ab40a40733a0d3b8.

Conflicts:
	modules/core/doc/command_line_parser.rst
	modules/core/include/opencv2/core/core.hpp
	modules/core/src/cmdparser.cpp
	modules/gpu/perf/main.cpp
	modules/gpu/test/main.cpp
	modules/ts/src/ts_perf.cpp