Remove the export file when removing an export model.
Remove the export file when removing an export model.

tizzybec/tilemill,fxtentacle/tilemill,mbrukman/tilemill,mbrukman/tilemill,MappingKat/tilemill,mbrukman/tilemill,Zhao-Qi/tilemill,MappingKat/tilemill,nyimbi/tilemill,Zhao-Qi/tilemill,paulovieira/tilemill-clima,Zhao-Qi/tilemill,isaacs/tilemill,makinacorpus/tilemill,paulovieira/tilemill-clima,isaacs/tilemill,florianf/tileoven,tizzybec/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,tizzybec/tilemill,MappingKat/tilemill,MappingKat/tilemill,nyimbi/tilemill,tizzybec/tilemill,paulovieira/tilemill-clima,mbrukman/tilemill,fxtentacle/tilemill,nyimbi/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,nyimbi/tilemill,makinacorpus/tilemill,MappingKat/tilemill,fxtentacle/tilemill,florianf/tileoven,mbrukman/tilemill,nyimbi/tilemill,florianf/tileoven,isaacs/tilemill,tilemill-project/tilemill,Zhao-Qi/tilemill,tizzybec/tilemill,fxtentacle/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,Zhao-Qi/tilemill,paulovieira/tilemill-clima,paulovieira/tilemill-clima,tilemill-project/tilemill,Teino1978-Corp/Teino1978-Corp-tilemill,tilemill-project/tilemill,fxtentacle/tilemill