elm_calendar: remove duplicated referece

Summary:
elm_calendar_weekdays_names_set() API is generated by eolian,
but its prototype is defined in both elm_calendar_common.h and
elm_calendar.eo.legacy.h.
Remove duplicated reference from elm_calendar_common.h

Reviewers: Hermet

Subscribers: Hermet

Differential Revision: https://phab.enlightenment.org/D2866

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>

legacy/elementary/src/lib/elm_calendar_common.h

@@ -17,35 +17,6 @@ typedef struct _Elm_Calendar_Mark Elm_Calendar_Mark;    /**< Item handle for a c
  */
 typedef char * (*Elm_Calendar_Format_Cb)(struct tm *stime);
 
-/**
- * Set weekdays names to be displayed by the calendar.
- *
- * @param obj The calendar object.
- * @param weekdays Array of seven strings to be used as weekday names.
- * @warning It must have 7 elements, or it will access invalid memory.
- * @warning The strings must be NULL terminated ('@\0').
- *
- * By default, weekdays abbreviations get from system are displayed:
- * E.g. for an en_US locale: "Sun, Mon, Tue, Wed, Thu, Fri, Sat"
- *
- * The first string should be related to Sunday, the second to Monday...
- *
- * The usage should be like this:
- * @code
- *   const char *weekdays[] =
- *   {
- *      "Sunday", "Monday", "Tuesday", "Wednesday",
- *      "Thursday", "Friday", "Saturday"
- *   };
- *   elm_calendar_weekdays_names_set(calendar, weekdays);
- * @endcode
- *
- * @see elm_calendar_weekdays_name_get()
- *
- * @ref calendar_example_02
- */
-EAPI void                 elm_calendar_weekdays_names_set(Evas_Object *obj, const char *weekdays[]);
-
 /**
  * Delete mark from the calendar.
  *