Merging faces

Is it possible (and if so: how?) to merge neighbouring faces into one? for example, see the image below: There are loads of faces right next to one-another which I’d like to make into one.

Select faces and press F or Select faces and X / Limited dissolve or depending on the actual geometry X / Dissolve.

You can also try to individually select the edge loops and delete them. Since you don’t have that many edge loops,l it shouldn’t take too long to do it manually. This should at least work for the edges that are not connected to the sides.

However it seems that you have edges that are connecting to more than two faces, which might cause problems at some point, and I’m fairly sure that deleting edge loops across such a connection is not possible (at least not with the simple “remove edge loop” command).