[processing] remove code with GDAL 1.x API as QGIS 3 will require GDA…

…L 2.x

python/plugins/processing/algs/gdal/warp.py

@@ -90,10 +90,9 @@ def defineCharacteristics(self):
                                           self.tr('Raster extent'),
                                           optional=True))
 
-        if GdalUtils.version() >= 2000000:
-            self.addParameter(ParameterCrs(self.EXT_CRS,
-                                           self.tr('CRS of the raster extent, leave blank for using Destination SRS'),
-                                           optional=True))
+        self.addParameter(ParameterCrs(self.EXT_CRS,
+                                       self.tr('CRS of the raster extent, leave blank for using Destination SRS'),
+                                       optional=True))
 
         self.addParameter(ParameterString(self.OPTIONS,
                                           self.tr('Additional creation options'),
@@ -151,10 +150,9 @@ def getConsoleCommands(self):
                 arguments.append(regionCoords[1])
                 arguments.append(regionCoords[3])
 
-                if GdalUtils.version() >= 2000000:
-                    if rastext_crs:
-                        arguments.append('-te_srs')
-                        arguments.append(rastext_crs)
+                if rastext_crs:
+                    arguments.append('-te_srs')
+                    arguments.append(rastext_crs)
 
         if opts:
             arguments.append('-co')

python/plugins/processing/tools/raster.py

@@ -104,14 +104,8 @@ def scanraster(layer, feedback):
 
 
 def mapToPixel(mX, mY, geoTransform):
-    try:
-        # GDAL 1.x
-        (pX, pY) = gdal.ApplyGeoTransform(
-            gdal.InvGeoTransform(geoTransform)[1], mX, mY)
-    except TypeError:
-        # GDAL 2.x
-        (pX, pY) = gdal.ApplyGeoTransform(
-            gdal.InvGeoTransform(geoTransform), mX, mY)
+    (pX, pY) = gdal.ApplyGeoTransform(
+        gdal.InvGeoTransform(geoTransform), mX, mY)
     return (int(pX), int(pY))