Remove EomDialog helper class

EomDialog has become obsolete with the switch to GtkBuilder templates.

origin commits:
https://gitlab.gnome.org/GNOME/eog/commit/9a60071

Author: fxri

doc/reference/eom-sections.txt

@@ -519,24 +519,6 @@ EOM_IS_METADATA_READER_JPG_CLASS
 EOM_METADATA_READER_JPG_GET_CLASS
 </SECTION>
 
-<SECTION>
-<FILE>eom-dialog</FILE>
-<TITLE>EomDialog</TITLE>
-EomDialog
-eom_dialog_construct
-eom_dialog_show
-eom_dialog_hide
-eom_dialog_get_controls
-<SUBSECTION Standard>
-EOM_DIALOG
-EOM_IS_DIALOG
-EOM_TYPE_DIALOG
-eom_dialog_get_type
-EOM_DIALOG_CLASS
-EOM_IS_DIALOG_CLASS
-EOM_DIALOG_GET_CLASS
-</SECTION>
-
 <SECTION>
 <FILE>eom-image-save-info</FILE>
 <TITLE>EomImageSaveInfo</TITLE>

src/Makefile.am

@@ -44,7 +44,6 @@ INST_H_FILES =				\
 	eom-window.h			\
 	eom-window-activatable.h	\
 	eom-sidebar.h			\
-	eom-dialog.h			\
 	eom-properties-dialog.h		\
 	eom-error-message-area.h	\
 	eom-file-chooser.h		\
@@ -72,7 +71,6 @@ libeom_c_files =			\
 	eom-window.c			\
 	eom-window-activatable.c	\
 	eom-sidebar.c			\
-	eom-dialog.c			\
 	eom-preferences-dialog.c	\
 	eom-properties-dialog.c		\
 	eom-error-message-area.c	\

src/eom-dialog.c

@@ -32,7 +32,6 @@
 #include <glib/gi18n.h>
 #include <gtk/gtk.h>
 
-#include "eom-dialog.h"
 #include "eom-image.h"
 #include "eom-metadata-sidebar.h"
 #include "eom-properties-dialog.h"

src/eom-dialog.h

@@ -30,7 +30,6 @@
 
 #include "eom-list-store.h"
 #include "eom-image.h"
-#include "eom-dialog.h"
 
 #include <glib.h>
 #include <glib-object.h>