Fix avoid intersections test

tests/src/python/test_qgsgeometry_avoid_intersections.py

@@ -49,8 +49,6 @@ def testNoSliverPolygons(self):
         # create a layer with some polygons that will be used as a source for "avoid intersections"
         l = QgsVectorLayer('MultiPolygon', 'test_layer', 'memory')
         assert l.isValid()
-        QgsProject.instance().addMapLayer(l)
-        QgsProject.instance().writeEntry("Digitizing", "/AvoidIntersectionsList", [l.id()])
 
         features = []
         for i, wkt in enumerate(feat_wkt):
@@ -64,7 +62,7 @@ def testNoSliverPolygons(self):
         # create a geometry and remove its intersections with other geometries
 
         g = QgsGeometry.fromWkt(newg_wkt)
-        assert g.avoidIntersections() == 0
+        assert g.avoidIntersections([l]) == 0
 
         # the resulting multi-polygon must have exactly three parts
         # (in QGIS 2.0 it has one more tiny part that appears at the border between two of the original polygons)