Fix typo

tools/starpu_smpirun.in

@@ -86,4 +86,4 @@ STACKSIZE=$(ulimit -s)
 [ "$STACKSIZE" != unlimited ] || STACKSIZE=8192
 $SMPIRUN -platform $PLATFORM -hostfile $MPI_HOSTFILE "$@" --cfg=smpi/privatize_global_variables:yes --cfg=contexts/stack_size:$STACKSIZE
 
-rm -f $TEMP
+rm -f $PLATFORM