Merge branch 'i217_remove_first_time_from_PlottingChannelProcessor' into 'master'

remove argument first_time from PlottingChannelProcessor

Closes #217

See merge request !249

sohstationviewer/view/plotting/plotting_widget/multi_threaded_plotting_widget.py

@@ -180,8 +180,7 @@ class MultiThreadedPlottingWidget(PlottingWidget):
                 continue
             channel_processor = PlottingChannelProcessor(
                 plotting_data[chan_id], chan_id,
-                self.min_x, self.max_x,
-                True
+                self.min_x, self.max_x
             )
             self.data_processors.append(channel_processor)
             channel_processor.finished.connect(self.process_channel)

sohstationviewer/view/plotting/plotting_widget/plotting_processor.py

@@ -15,8 +15,7 @@ class PlottingChannelProcessor(QtCore.QRunnable):
     The class that handles trimming excess data and interfacing with a
     downsampler for a plotting channel.
     """
-    def __init__(self, channel_data, channel_id, start_time, end_time,
-                 first_time):
+    def __init__(self, channel_data, channel_id, start_time, end_time):
         super().__init__()
         self.signals = PlottingChannelProcessorSignals()
         # Aliasing the signals for ease of use
@@ -30,7 +29,6 @@ class PlottingChannelProcessor(QtCore.QRunnable):
 
         self.start_time = start_time
         self.end_time = end_time
-        self.first_time = first_time
 
     def run(self):
         """