Deprecate the --dependencies argument.

We no longer use the --dependencies argument, but it is still used in
a number of places.  Let's remove its functionality but keep the
command-line option as a no-op so we can remove the uses over time.

Test: Run on crate that uses the option.
Change-Id: I954f68faf11d1a926f0ccf070afa8332385e3671
1 file changed