io.encodings.strict: some fixes.

basis/io/encodings/strict/strict.factor

@@ -4,15 +4,8 @@ USING: io.encodings kernel accessors summary ;
 IN: io.encodings.strict
 
 TUPLE: strict code ;
+
 C: strict strict
 
-TUPLE: decode-error ;
-: decode-error ( -- * ) \ decode-error new throw ;
-M: decode-error summary
-    drop "Error in decoding input stream" ;
-
-M: strict <decoder>
-    code>> <decoder> [ strict ] change-code ;
-
 M: strict decode-char
     code>> decode-char dup replacement-char = [ decode-error ] when ;