remove extra config bind on joystick axes (#6955)

Fixes fail sound due to the control set not changing between calls.

Author: notimaginative

code/controlconfig/controlsconfig.cpp

@@ -2085,7 +2085,6 @@ int control_config_bind_key_on_frame(int ctrl, selItem item, bool API_Access)
 
 		if (!done && bind) {
 			if (!Axis_override.empty()) {
-				control_config_bind(ctrl, Axis_override, item, API_Access);
 				control_config_bind(ctrl, Axis_override, item, API_Access);
 				done = true;
 				strcpy_s(bound_string, Axis_override.textify().c_str());