utility-tasks: Drop fetchall and checkuriall tasks
The same thing can now be done with "bitbake <target> --runall=fetch"
or "bitbake <target> --runall=checkuri".
Dropping the tasks takes "bitbake core-image-sato -g" from 22s to 8s
since it no longer has to resolve the recursive dependencies (it
doesn't know if any given target will touch them or not until it
computes them). That is a significant enough win that its worth any
impact this may have on the small number of users using the tasks.
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>
