Applied some C#12 stuff

Tests/RGB.NET.Core.Tests/Helper/SimplexNoise.cs

@@ -172,7 +172,7 @@ public static class SimplexNoise
 
         // Add contributions from each corner to get the final noise value.
         // The result is scaled to return values in the interval [-1,1].
-        return 40.0f * (n0 + n1 + n2); // TODO: The scale factor is preliminary!
+        return 40.0f * (n0 + n1 + n2);
     }
 
 
@@ -276,7 +276,7 @@ public static class SimplexNoise
 
         // Add contributions from each corner to get the final noise value.
         // The result is scaled to stay just inside [-1,1]
-        return 32.0f * (n0 + n1 + n2 + n3); // TODO: The scale factor is preliminary!
+        return 32.0f * (n0 + n1 + n2 + n3);
     }
 
     private static byte[] _perm;