Remove error detection from prettyprinting.
Remove error detection from prettyprinting.

We do not really need this.

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