detect: remove unused field

src/detect.h

@@ -859,11 +859,6 @@ typedef struct DetectEngineCtx_ {
     /* maximum recursion depth for content inspection */
     int inspection_recursion_limit;
 
-    /* conf parameter that limits the length of the http request body inspected */
-    int hcbd_buffer_limit;
-    /* conf parameter that limits the length of the http response body inspected */
-    int hsbd_buffer_limit;
-
     /* array containing all sgh's in use so we can loop
      * through it in Stage4. */
     struct SigGroupHead_ **sgh_array;