Remove debugging stuff from AlgSimplify.
Remove debugging stuff from AlgSimplify.

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