Remove dead comments and unnecesary warnings from command_line_efl

Remove dead comments and unnecesary warnings from command_line_efl

The code was commented out during M37 migration attempt. The warnings
were added to keep in mind the removed switches need to be investigated.
It's been good couple of months since that time and there is no
indication the swtiches are needed for M40. Remove the code and the
warnings as there is no good reason to keep them around any longer.
Reviewed by: Antonio Gomes, Piotr Grad

Change-Id: I1162bd5a3fe379a9a2ba125c39ff1694d635ac2c
Signed-off-by: Piotr Tworek <p.tworek@samsung.com>