Don't set the max current on the monsoon device by default

tools/telemetry/telemetry/core/platform/power_monitor/monsoon_power_monitor.py

 # Copyright 2014 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import json
 import multiprocessing
 import tempfile
 import time
 
 from telemetry.core import exceptions
@@ skipping 33 matching lines @@
 
 class MonsoonPowerMonitor(power_monitor.PowerMonitor):
   def __init__(self):
     super(MonsoonPowerMonitor, self).__init__()
     self._powermonitor_process = None
     self._powermonitor_output_file = None
     self._is_collecting = None
     self._monsoon = None
     try:
       self._monsoon = monsoon.Monsoon(wait=False)
-      self._monsoon.SetMaxCurrent(2.0)
       # Nominal Li-ion voltage is 3.7V, but it puts out 4.2V at max capacity.
       # Use 4.0V to simulate a "~80%" charged battery. Google "li-ion voltage
       # curve". This is true only for a single cell. (Most smartphones, some
       # tablets.)
       self._monsoon.SetVoltage(4.0)
     except EnvironmentError:
       self._monsoon = None
 
   def CanMonitorPowerAsync(self):
     return self._monsoon is not None
@@ skipping 46 matching lines @@
       total_energy_consumption_mwh += energy_consumption_mw * timedelta_h
       power_samples.append(energy_consumption_mw)
     # -------- Collect and Process Data -------------
     out_dict = {}
     # Raw power usage samples.
     out_dict['identifier'] = 'monsoon'
     out_dict['power_samples_mw'] = power_samples
     out_dict['energy_consumption_mwh'] = total_energy_consumption_mwh
 
     return out_dict