Style: Cleanup code

CityDoctorParent/CityDoctorValidation/src/main/java/de/hft/stuttgart/citydoctor2/checks/topology/FeatureCollisionCheck.java

@@ -11,8 +11,6 @@ import de.hft.stuttgart.citydoctor2.check.RequirementType;
 import de.hft.stuttgart.citydoctor2.check.ResultStatus;
 import de.hft.stuttgart.citydoctor2.check.error.FeatureCollisionError;
 import de.hft.stuttgart.citydoctor2.checks.Checks;
-import de.hft.stuttgart.citydoctor2.checks.geometry.SolidSelfIntCheck;
-import de.hft.stuttgart.citydoctor2.checks.util.GeometryCollisionUtil;
 import de.hft.stuttgart.citydoctor2.checks.util.SelfIntersectionUtil;
 import de.hft.stuttgart.citydoctor2.database.CityObjectCache;
 import de.hft.stuttgart.citydoctor2.datastructure.BridgeObject;
@@ -21,13 +19,12 @@ import de.hft.stuttgart.citydoctor2.datastructure.CityFurniture;
 import de.hft.stuttgart.citydoctor2.datastructure.CityObject;
 import de.hft.stuttgart.citydoctor2.datastructure.GenericCityObject;
 import de.hft.stuttgart.citydoctor2.datastructure.Geometry;
-import de.hft.stuttgart.citydoctor2.datastructure.GmlId;
 import de.hft.stuttgart.citydoctor2.datastructure.LinearRing;
 import de.hft.stuttgart.citydoctor2.datastructure.OtherConstructionObject;
 import de.hft.stuttgart.citydoctor2.datastructure.Polygon;
 import de.hft.stuttgart.citydoctor2.datastructure.TopLevelTransportFeature;
 import de.hft.stuttgart.citydoctor2.datastructure.Vegetation;
-import de.hft.stuttgart.citydoctor2.edge.PolygonPolygonIntersection;
+import de.hft.stuttgart.citydoctor2.math.Triangle3d;
 import de.hft.stuttgart.citydoctor2.parser.ParserConfiguration;
 import de.hft.stuttgart.citydoctor2.utils.CollisionRecord;
 import de.hft.stuttgart.citydoctor2.utils.Pair;