Revert "workaround missing setStops binding"

This reverts commit c4addbeaea.

pyqtgraph/colormap.py

@@ -359,13 +359,7 @@ class ColorMap(object):
         
         pos, color = self.getStops(mode=self.BYTE)
         color = [QtGui.QColor(*x) for x in color]
-        stops = zip(pos, color)
-        if hasattr(g, 'setStops'):
-            g.setStops(list(stops))
-        else:
-            # PySide6 has a missing setStops binding
-            for pos, col in stops:
-                g.setColorAt(pos, col)
+        g.setStops(list(zip(pos, color)))
         return g
 
     def getColors(self, mode=None):

pyqtgraph/graphicsItems/GradientEditorItem.py

@@ -626,10 +626,9 @@ class GradientEditorItem(TickSliderItem):
     def getGradient(self):
         """Return a QLinearGradient object."""
         g = QtGui.QLinearGradient(QtCore.QPointF(0,0), QtCore.QPointF(self.length,0))
-        stops = []
         if self.colorMode == 'rgb':
             ticks = self.listTicks()
-            stops = [(x, QtGui.QColor(t.color)) for t,x in ticks]
+            g.setStops([(x, QtGui.QColor(t.color)) for t,x in ticks])
         elif self.colorMode == 'hsv':  ## HSV mode is approximated for display by interpolating 10 points between each stop
             ticks = self.listTicks()
             stops = []
@@ -642,12 +641,7 @@ class GradientEditorItem(TickSliderItem):
                     x = x1 + dx*j
                     stops.append((x, self.getColor(x)))
                 stops.append((x2, self.getColor(x2)))
-        if hasattr(g, 'setStops'):
             g.setStops(stops)
-        else:
-            # PySide6 has a missing setStops binding
-            for pos, col in stops:
-                g.setColorAt(pos, col)
         return g
         
     def getColor(self, x, toQColor=True):