Remove build notifications field.
Remove build notifications field.

Now the commit author will be notified, rather than Cosmin and me.

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