chore: Fix more warnings.

Author: freezy

LibDmd.Test/Frame/FrameTests.cs

@@ -51,13 +51,9 @@ public void Should_Correctly_Compare_Frames()
 			var rgb2 = FrameGenerator.Random(128, 32, 24);
 
 			(gray1 == gray2).Should().Be(false);
-			(gray1 == gray1).Should().Be(true);
-			(gray2 == gray2).Should().Be(true);
-			
+
 			(rgb1 == rgb2).Should().Be(false);
-			(rgb1 == rgb1).Should().Be(true);
-			(rgb2 == rgb2).Should().Be(true);
-			
+
 			(rgb1 == gray1).Should().Be(false);
 
 			gray1.Update(gray2);
@@ -146,4 +142,4 @@ public void DebugMMColorization()
 			RemoveLogger();
 		}
 	}
-}
+}