zscanner: remove useless error code

src/common/errcode.c

@@ -132,7 +132,6 @@ const error_table_t knot_error_msgs[] = {
 	{ZSCANNER_EUNOPENED_INCLUDE, "Include file opening error!"},
 	{ZSCANNER_EBAD_RDATA_LENGTH, "The rdata length statement is incorrect!"},
 	{ZSCANNER_ECANNOT_TEXT_DATA, "Unable to process text form for this type!"},
-	{ZSCANNER_EBAD_HEX_DATA, "Bad hexadecimal rdata format!"},
 	{ZSCANNER_EBAD_LOC_DATA, "Bad zone location data!"},
 	{ZSCANNER_EUNKNOWN_BLOCK, "Unknown rdata block!"},
 	{ZSCANNER_EBAD_ALGORITHM, "Bad algorithm!"},

src/common/errcode.h

@@ -146,7 +146,6 @@ enum knot_error {
 	ZSCANNER_EUNOPENED_INCLUDE,
 	ZSCANNER_EBAD_RDATA_LENGTH,
 	ZSCANNER_ECANNOT_TEXT_DATA,
-	ZSCANNER_EBAD_HEX_DATA,
 	ZSCANNER_EBAD_LOC_DATA,
 	ZSCANNER_EUNKNOWN_BLOCK,
 	ZSCANNER_EBAD_ALGORITHM,

src/zscanner/test/processing.c

@@ -73,7 +73,6 @@ const char *error_names[] = {
 	ERROR_CODE_TO_STRING(ZSCANNER_EUNOPENED_INCLUDE),
 	ERROR_CODE_TO_STRING(ZSCANNER_EBAD_RDATA_LENGTH),
 	ERROR_CODE_TO_STRING(ZSCANNER_ECANNOT_TEXT_DATA),
-	ERROR_CODE_TO_STRING(ZSCANNER_EBAD_HEX_RDATA),
 	ERROR_CODE_TO_STRING(ZSCANNER_EBAD_LOC_DATA),
 	ERROR_CODE_TO_STRING(ZSCANNER_EUNKNOWN_BLOCK),
 	ERROR_CODE_TO_STRING(ZSCANNER_EBAD_ALGORITHM),