Remove variable move_menu_scale

The variable is just set to 1.0 and is never modified, I also
removed the function lcd_move_menu_1mm()

Changes save 96 bytes of flash memory and 4 bytes of SRAM

Firmware/ultralcd.cpp

@@ -1384,8 +1384,6 @@ void lcd_pause_usb_print()
     SERIAL_PROTOCOLLNRPGM(MSG_OCTOPRINT_PAUSE);
 }
 
-
-float move_menu_scale;
 static void lcd_move_menu_axis();
 
 
@@ -2762,7 +2760,7 @@ static void _lcd_move(const char *name, uint8_t axis, int min, int max)
 		refresh_cmd_timeout();
 		if (! planner_queue_full())
 		{
-			current_position[axis] += float((int)lcd_encoder) * move_menu_scale;
+			current_position[axis] += float((int)lcd_encoder);
 			if (min_software_endstops && current_position[axis] < min) current_position[axis] = min;
 			if (max_software_endstops && current_position[axis] > max) current_position[axis] = max;
 			lcd_encoder = 0;
@@ -2790,7 +2788,7 @@ void lcd_move_e()
 			refresh_cmd_timeout();
 			if (! planner_queue_full())
 			{
-				current_position[E_AXIS] += float((int)lcd_encoder) * move_menu_scale;
+				current_position[E_AXIS] += float((int)lcd_encoder);
 				lcd_encoder = 0;
 				plan_buffer_line_curposXYZE(manual_feedrate[E_AXIS] / 60);
 				lcd_draw_update = 1;
@@ -4234,13 +4232,6 @@ void lcd_move_menu_axis()
 	MENU_END();
 }
 
-static void lcd_move_menu_1mm()
-{
-  move_menu_scale = 1.0;
-  lcd_move_menu_axis();
-}
-
-
 void EEPROM_save(int pos, uint8_t* value, uint8_t size)
 {
   do
@@ -5671,7 +5662,7 @@ static void lcd_settings_menu()
 
 	if (!PRINTER_ACTIVE || isPrintPaused)
     {
-	    MENU_ITEM_SUBMENU_P(_i("Move axis"), lcd_move_menu_1mm);////MSG_MOVE_AXIS c=18
+	    MENU_ITEM_SUBMENU_P(_i("Move axis"), lcd_move_menu_axis);////MSG_MOVE_AXIS c=18
 	    MENU_ITEM_GCODE_P(_i("Disable steppers"), PSTR("M84"));////MSG_DISABLE_STEPPERS c=18
     }
 
@@ -8879,7 +8870,6 @@ void menu_lcd_longpress_func(void)
 #endif
         || menu_menu == lcd_support_menu
         ){
-            move_menu_scale = 1.0;
             menu_submenu(lcd_move_z);
         } else {
             // otherwise consume the long press as normal click