Fix a host action compile error (#13208)

Marlin/src/gcode/gcode.cpp

     }
 
     #if ENABLED(HOST_PROMPT_SUPPORT)
-      if (host_prompt_reason == PROMPT_G29_RETRY) host_action_prompt_end();
+      host_action_prompt_end();
     #endif
 
     #ifdef G29_SUCCESS_COMMANDS