revert error codes
diff --git a/inc/qcbor/qcbor_common.h b/inc/qcbor/qcbor_common.h
index 04745ba..aa0c696 100644
--- a/inc/qcbor/qcbor_common.h
+++ b/inc/qcbor/qcbor_common.h
@@ -576,12 +576,6 @@
     * See @ref QCBOR_DECODE_ALLOW_UNPROCESSED_TAG_NUMBERS. */
    QCBOR_ERR_UNPROCESSED_TAG_NUMBER = 90,
 
-   /** File a an issue in github if this happens!  For map sorting, QCBOR decodes the
-    * CBOR that it just encoded. This error is returned if QCBOR can't decode what
-    * it just encoded. */
-   QCBOR_ERR_SORT_FAIL = 91,
-
-
    /** A range of error codes that can be made use of by the
     * caller. QCBOR internally does nothing with these except notice
     * that they are not QCBOR_SUCCESS. See QCBORDecode_SetError(). */