Is right-click still an important gesture to hold on to?

With more and more people using mobile devices (or devices which doesn't have right click gesture), its getting tough to indicate that there is an activity that involves right click on desktop devices, especially for those applications which became popular on mobile devices or people started using them on mobile devices first like facebook or gmail.

Do you think right click is still an important gesture to hold on too, or should it be completely ignored while doing website design?