MEDIUM: sample: change the prototype of sample-fetches functions

This patch removes the "opt" entry from the prototype of the
sample-fetches fucntions. This permits to remove some weight
in the prototype call.
diff --git a/include/proto/proto_http.h b/include/proto/proto_http.h
index 817c98f..41a7dc6 100644
--- a/include/proto/proto_http.h
+++ b/include/proto/proto_http.h
@@ -126,10 +126,8 @@
 struct chunk *http_error_message(struct stream *s, int msgnum);
 struct redirect_rule *http_parse_redirect_rule(const char *file, int linenum, struct proxy *curproxy,
                                                const char **args, char **errmsg, int use_fmt);
-int smp_fetch_cookie(unsigned int opt, const struct arg *args, struct sample *smp,
-                     const char *kw, void *private);
-int smp_fetch_base32(unsigned int opt, const struct arg *args, struct sample *smp,
-                     const char *kw, void *private);
+int smp_fetch_cookie(const struct arg *args, struct sample *smp, const char *kw, void *private);
+int smp_fetch_base32(const struct arg *args, struct sample *smp, const char *kw, void *private);
 
 enum http_meth_t find_http_meth(const char *str, const int len);