Fix backprop and matmul cpu schedules

Whoops.

juno_samples/rodinia/backprop/src/cpu.sch

@@ -59,8 +59,6 @@ if !feature("seq") {
   inline(backprop@adjust_input);
 }
 
-xdot[true](*);
-
 delete-uncalled(*);
 const-inline(*);