[2.0.x] Auto-enable DISABLE_REDUCED_ACCURACY_WARNING if HOME_AFTER_DEACTIVATE enabled (#7879)

* Auto-enable DISABLE_REDUCED_ACCURACY_WARNING if HOME_AFTER_DEACTIVATE enabled

If HOME_AFTER_DEACTIVATE, there is no need to warn on LCD since printer will home prior to starting print.  Saves 60 bytes PROGMEM on AVR with U8g panel.

* Reduce lines used

* Reduce lines used

Marlin/src/lcd/ultralcd_impl_DOGM.h

     if (!axis_homed[axis])
       u8g.print('?');
     else {
-      #if DISABLED(DISABLE_REDUCED_ACCURACY_WARNING)
+      #if DISABLED(HOME_AFTER_DEACTIVATE) && DISABLED(DISABLE_REDUCED_ACCURACY_WARNING)
         if (!axis_known_position[axis])
           u8g.print(' ');
         else
       #endif
-      lcd_printPGM(pstr);
+          lcd_printPGM(pstr);
     }
   }
 }

Marlin/src/lcd/ultralcd_impl_HD44780.h

     if (!axis_homed[axis])
       lcd.write('?');
     else {
-      #if DISABLED(DISABLE_REDUCED_ACCURACY_WARNING)
+      #if DISABLED(HOME_AFTER_DEACTIVATE) && DISABLED(DISABLE_REDUCED_ACCURACY_WARNING)
         if (!axis_known_position[axis])
           lcd.write(' ');
         else
       #endif
-      lcd_printPGM(pstr);
+          lcd_printPGM(pstr);
     }
   }
 }