clean up mesh

[6r0m]

I have a window with much not needed faces:

for clean up this mesh I:

1. select nearby faces and press F to make one face
   but there are remains vertices, which not using (just lie on the edge)

2. for deleting it I selected edges with this vertices, X -> Limited dissolve

Is there more easy way to clean up this window (delete vertices)?

[6r0m]

problem solved, I realized that “Limited dissolve” working when all selected too. it’s fast now))