test: removed old group

packages/geometry/test/src/geometry_test.dart

@@ -11,7 +11,6 @@ class Binomial {
 }
 
 void main() {
-  group('Maths', () {
   group('calculateArc', () {
     test('returns by default 100 points as indicated by precision', () {
       final points = calculateArc(
@@ -21,6 +20,7 @@ void main() {
       );
       expect(points.length, 100);
     });
+
     test('returns as many points as indicated by precision', () {
       final points = calculateArc(
         center: Vector2.zero(),
@@ -156,5 +156,4 @@ void main() {
       });
     });
   });
-  });
 }