Fix conditional writes in dynamic mode

As reported by CLF78. He also suggested a fix, but I did it a bit differently here. This is the only place WordUtils was used, and it was by mistake, at that -- so getting rid of it entirely should help prevent similar mistakes in the future.

Kamek/Commands/WriteCommand.cs

@@ -69,7 +69,7 @@ public override void WriteArguments(BinaryWriter bw)
             if (Original.HasValue)
             {
                 Original.Value.AssertNotRelative();
-                bw.WriteBE(Original.Value);
+                bw.WriteBE(Original.Value.Value);
             }
         }
 

Kamek/Word.cs

@@ -111,14 +111,4 @@ public override string ToString()
             throw new NotImplementedException();
         }
     }
-
-
-    public static class WordUtils
-    {
-        public static void WriteBE(this BinaryWriter bw, Word word)
-        {
-            bw.Write((byte)word.Type);
-            bw.WriteBE((uint)word.Value);
-        }
-    }
 }