🎨 Misc. code cleanup

Marlin/src/lcd/extui/mks_ui/tft_Language_ru.h

@@ -194,7 +194,6 @@
 #define TITLE_HOME_RU                       "Home"
 #define TITLE_EXTRUDE_RU                    "экструзия"
 #define TITLE_LEVELING_RU                   "уровень"
-#define TITLE_MLEVELING_RU                  "углы"
 #define TITLE_SET_RU                        "настройки"
 #define TITLE_MORE_RU                       "больше"
 #define TITLE_CHOOSEFILE_RU                 "файла"

Marlin/src/lcd/extui/mks_ui/tft_Language_sp.h

@@ -29,7 +29,6 @@
 #define PRINT_TEXT_SP           "Imprimir"
 #define EXTRUDE_TEXT_SP         "Extrusor"
 #define LEVELING_TEXT_SP        "Leveling"
-#define MLEVELING_TEXT_SP       "Leveling"
 #define AUTO_LEVELING_TEXT_SP   "Autolevel"
 #define SET_TEXT_SP             "Config"
 #define MORE_TEXT_SP            "Más"
@@ -53,7 +52,6 @@
 #define TOOL_MOVE_SP            "Mover"
 #define TOOL_HOME_SP            "Origen"
 #define TOOL_LEVELING_SP        "Leveling"
-#define TOOL_MLEVELING_SP       "Leveling"
 #define TOOL_AUTO_LEVELING_SP   "Autolevel"
 #define TOOL_FILAMENT_SP        "Filamento"
 #define TOOL_MORE_SP            "Más"