Remove make_md5 declaraion from rigctl_parse.c

https://github.com/Hamlib/Hamlib/issues/813

tests/rigctl_parse.c

@@ -67,6 +67,7 @@ extern int read_history();
 #include "misc.h"
 #include "iofunc.h"
 #include "sprintflst.h"
+#include "md5.h"
 
 #include "rigctl_parse.h"
 
@@ -4938,8 +4939,6 @@ declare_proto_rig(pause)
     return (RIG_OK);
 }
 
-extern char *make_md5(char *password);
-
 int rigctld_password_check(RIG *rig, const char *md5)
 {
     int retval = -RIG_EINVAL;