ui/keyboard_switch: remove unused NUM_INPUT_TYPES
Only used in set_password.c, which is the old password input which is
gonna be removed soon.
#include <screen.h>
#include <ui/component.h>
-typedef enum { DIGITS, LOWER_CASE, UPPER_CASE, NUM_INPUT_TYPES } keyboard_mode_t;
+typedef enum { DIGITS, LOWER_CASE, UPPER_CASE } keyboard_mode_t;
/********************************** Create Instance **********************************/
