Remove pd-l2ork-k12*.desktop files, as K12 mode isn't supported by purr-data yet.

debuild/debian/rules

@@ -28,6 +28,7 @@ override_dh_auto_install:
 # Remove some unneeded files.
 	cd debian/purr-data/ && rm -f Makefile README.txt
 #	cd debian/purr-data/usr/lib/pd-l2ork/bin && rm -f DejaVuSansMono.ttf
+	cd debian/purr-data/usr/share/applications && rm -f pd-l2ork-k12*.desktop
 	cd debian/purr-data/usr/lib/pd-l2ork/extra && rm -rf */*.pd_linux_o */*.la
 # Move cyclist and pdsend/pdreceive to the pd-l2ork lib directory to prevent
 # conflicts with other packages providing these files.