Remove obsolete test conditions (#12829)

Marlin/src/gcode/gcode.cpp

         case 49: M49(); break;                                    // M49: Turn on or off G26 debug flag for verbose output
       #endif
 
-      #if ENABLED(LCD_SET_PROGRESS_MANUALLY) && (ENABLED(ULTRA_LCD) || ENABLED(EXTENSIBLE_UI))
+      #if ENABLED(LCD_SET_PROGRESS_MANUALLY)
         case 73: M73(); break;                                    // M73: Set progress percentage (for display on LCD)
       #endif
 

Marlin/src/gcode/gcode.h

     static void M49();
   #endif
 
-  #if ENABLED(LCD_SET_PROGRESS_MANUALLY) && (ENABLED(ULTRA_LCD) || ENABLED(EXTENSIBLE_UI))
+  #if ENABLED(LCD_SET_PROGRESS_MANUALLY)
     static void M73();
   #endif