fix test

Author: tanjinx

examples/local/scripts/vttablet-up.sh

@@ -55,7 +55,6 @@ vttablet \
  --service_map 'grpc-queryservice,grpc-tabletmanager,grpc-updatestream' \
  --pid_file $VTDATAROOT/$tablet_dir/vttablet.pid \
  --vtctld_addr http://$hostname:$vtctld_web_port/ \
- --throttler-config-via-topo --heartbeat_enable --heartbeat_interval=250ms --heartbeat_on_demand_duration=5s \
  > $VTDATAROOT/$tablet_dir/vttablet.out 2>&1 &
 
 # Block waiting for the tablet to be listening