Changes

Remove the interplanetary transfer maneuver

Retiring this button in favor of the adv transfer to another planet
function.

This was backed by the very old DeltaVAndTimeForInterplanetaryTransferEjection()
algorithm in OrbitalManeuverCalculator, which is also just deleted.

If it turns out people preferred going in through this menu item
compared to using the porkchop plotter, we could bring the menu back and
wire it up to the same InterplantearyTransfer maneuver solver in MJLib.

The one feature which is lost here is the "WaitForPhaseAngle" button,
which I'm guessing nobody understood what it did correctly.  It was
comparable to the "Match Orbit" button in the new Hohmann UI which
does a 5-keplerian element match to the orbit rather than a 6-element
rendezvous target.  I think that makes more sense for Hohmann transfers
where you might have satellites all in the same orbit.

For planning orbits to e.g. L4/L5 leading/following a planet, I think a
better way to do that would be to construct a target orbit manually
(see #2232).
 (commit: 13b816f)