test: remove known tautologies and scaffolds

tests/AcDream.Core.Tests/Rendering/ChaseCameraTests.cs

@@ -54,11 +54,4 @@ public class ChaseCameraTests
 
         Assert.True(z2 > z1, "Increasing pitch should raise the camera");
     }
-
-    [Fact]
-    public void ImplementsICamera()
-    {
-        ICamera camera = new ChaseCamera { Aspect = 16f / 9f };
-        camera.ToString();  // just proves interface is implemented
-    }
 }