Let flrig use 5 second timeout from rig instead of overriding it

rigs/dummy/flrig.c

@@ -404,8 +404,6 @@ static int read_transaction(RIG *rig, char *xml, int xml_len)
 
     rig_debug(RIG_DEBUG_TRACE, "%s\n", __func__);
 
-    rs->rigport.timeout = 1000; // 1 second read string timeout
-
     retry = 2;
     delims = "\n";
     xml[0] = 0;

rigs/dummy/flrig.h

@@ -28,7 +28,7 @@
 #include <sys/time.h>
 #endif
 
-#define BACKEND_VER "20210123"
+#define BACKEND_VER "20210128"
 
 #define EOM "\r"
 #define TRUE 1