Use the test-specific hull generator instead of a fixed one.

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/math/trunk@1596040 13f79535-47bb-0310-9956-ffa450edef68

src/test/java/org/apache/commons/math3/geometry/euclidean/twod/hull/ConvexHullGenerator2DAbstractTest.java

@@ -282,7 +282,6 @@ public abstract class ConvexHullGenerator2DAbstractTest {
             new Vector2D(-11.0,  1.0),
         };
 
-        ConvexHullGenerator2D generator = new MonotoneChain(true, 1e-6);
         ConvexHull2D convHull = generator.generate(points);
         Region<Euclidean2D> hullRegion = convHull.createRegion();