AF2_KLGA.bgl if you have one
CVX_LAGUARDIA.BGL (you may or may not have to remove this added-in flattening file depending on how it reacts with the terrain (default or otherwise) files you have in your own FSX)

Also these files, although they do serve any active purpose in the scenery display

KLGACTB2.xcl
KLGAfnce.xcl
KLGAgate.xcl
KLGAmain.xcl
KLGAtree.xcl
KLGAusa1.xcl
KLGAveh.xcl