reverted accidentally commited testing config

testing/scripts/start-umls

@@ -57,7 +57,7 @@ do
 	[ -f  $UMLHOSTFS ] || die "!! uml root file system '$UMLHOSTFS' not found"
 
 	cecho-n " * Starting ${host}.."
-	eval screen -dmS ${host} "nice $UMLKERNEL \
+	eval screen -dmS ${host} "$UMLKERNEL \
 	    umid=${host} \
 	    ubda=$UMLHOSTFS \
 	    \$SWITCH_${host} \