use that BufferedJSON works for non-existing files

dap/worker.py

@@ -1,5 +1,4 @@
 import argparse
-import os
 from random import randint
 
 import numpy as np
@@ -38,12 +37,8 @@ def main():
 
 
 def work(backend_address, accumulator_host, accumulator_port, visualisation_host, visualisation_port, fn_peakfinder_parameters, skip_frames_rate):
-    peakfinder_parameters = {}
-    bj_peakfinder_parameters = None
-    if fn_peakfinder_parameters is not None and os.path.exists(fn_peakfinder_parameters):
     bj_peakfinder_parameters = BufferedJSON(fn_peakfinder_parameters)
 
-
     jfdata = JFData()
 
     zmq_socks = ZMQSockets(backend_address, accumulator_host, accumulator_port, visualisation_host, visualisation_port)
@@ -59,7 +54,6 @@ def work(backend_address, accumulator_host, accumulator_port, visualisation_host
 
 # check if peakfinder parameters changed and then re-read it
         try:
-            if bj_peakfinder_parameters:
             peakfinder_parameters = bj_peakfinder_parameters.load()
 #                    if worker ==  0:
 #                        print(f"({pulse_id}) update peakfinder parameters {old_peakfinder_parameters}", flush=True)