removed unnecessary code relative to plugin name

EDIT : please consider my other pull requests first, as this one is very simple and can be merged manually afterwards, thus avoiding annoying conflicts.


Ok, this commit is almost nothing, just removing the pluginName variable that had nothing to do here.

I refrained myself from deleting lines 56 and 57 also, as they do not make much sense either. They are obviously here to make private (local, actually) variables readable from the outside... but I really see no point for doing this. Besides, why make them private variables if we make them public right after. Finally, it's odd to prepend them with an underscore when their whole purpose is actually to be public :) I suggest they are removed.