Remove now-unused function.
Remove now-unused function.

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