Im going to go out on a limb and say yes. While Dragon Pulse is a very good move,, with moves like Draco and Blue flare it doesn't matter a whole lot about conserving reliability. It also doesn't give any real coverage to Reshy, so it's basically a fail safe move it doesn't need.
Earth power however, does have some uses. One of them is covering rock types, which threaten Resh with moves like stone edge. It also means Pokemon like heatran don't wallyyou out too much. Plus, ground type is one of the best all round offensive type's, so it's not exactly a dead weight if yo
u don't have a particular use for it.
As far as set goes, just slap a on a choice scarf or specs. If you wanted too, an expert bt is a very good at bluffing choice items. So opponents will be much more cautious to switch. You can play around with evs a little bit.
Hope I helped!