Remove now-pointless test program.
Remove now-pointless test program.

It misuses reduce anyway.

mrakgr/futhark,diku-dk/futhark,ihc/futhark,ihc/futhark,mrakgr/futhark,diku-dk/futhark,diku-dk/futhark,diku-dk/futhark,HIPERFIT/futhark,ihc/futhark,CulpaBS/wbBach,HIPERFIT/futhark,mrakgr/futhark,HIPERFIT/futhark,diku-dk/futhark