Remove the duplicate byte TomlTypeConverter registration (#1359)

typeof(byte) was registered twice in the TypeConverters initializer; the
second entry silently overwrote the first. Keep the one grouped with the
other integral types.

BepInEx.Core/Configuration/TomlTypeConverter.cs

@@ -31,11 +31,6 @@ public static class TomlTypeConverter
             ConvertToString = (obj, type) => obj.ToString().ToLowerInvariant(),
             ConvertToObject = (str, type) => bool.Parse(str)
         },
-        [typeof(byte)] = new TypeConverter
-        {
-            ConvertToString = (obj, type) => obj.ToString(),
-            ConvertToObject = (str, type) => byte.Parse(str)
-        },
 
         //integral types