detect/dataset: cleanup dead code

src/detect-dataset.c

@@ -39,9 +39,6 @@
 #include "util-print.h"
 #include "util-misc.h"
 
-#define PARSE_REGEX         "([a-z]+)(?:,\\s*([\\-_A-z0-9\\s\\.]+)){1,4}"
-static DetectParseRegex parse_regex;
-
 int DetectDatasetMatch (ThreadVars *, DetectEngineThreadCtx *, Packet *,
         const Signature *, const SigMatchCtx *);
 static int DetectDatasetSetup (DetectEngineCtx *, Signature *, const char *);
@@ -54,8 +51,6 @@ void DetectDatasetRegister (void)
     sigmatch_table[DETECT_DATASET].url = "/rules/dataset-keywords.html#dataset";
     sigmatch_table[DETECT_DATASET].Setup = DetectDatasetSetup;
     sigmatch_table[DETECT_DATASET].Free  = DetectDatasetFree;
-
-    DetectSetupParseRegexes(PARSE_REGEX, &parse_regex);
 }
 
 /*