[evince] libview: Remove EvDocumentModel get type function declaration

[Germán Poo-Caamaño <gpoo src gnome org>]

commit 0cdce687d3edfa5ac0fd19539ba1815d039026d5
Author: Iñigo Martínez <inigomartinez gmail com>
Date:   Fri Sep 7 22:34:29 2018 +0200

    libview: Remove EvDocumentModel get type function declaration
    
    The EvDocumentModel class declares the `ev_document_model_get_type`
    function as part of the `GObject` boilerplate code.
    
    However, this declaration is not necessary and also causes a warning
    when introspection data file, `EvinceView-3.0.gir`, is generated.

 libview/ev-document-model.h | 1 -
 1 file changed, 1 deletion(-)
---
diff --git a/libview/ev-document-model.h b/libview/ev-document-model.h
index 784e27d6..6a99e43a 100644
--- a/libview/ev-document-model.h
+++ b/libview/ev-document-model.h
@@ -54,7 +54,6 @@ typedef enum {
        EV_PAGE_LAYOUT_AUTOMATIC
 } EvPageLayout;
 
-GType            ev_document_model_get_type          (void) G_GNUC_CONST;
 EvDocumentModel *ev_document_model_new               (void);
 EvDocumentModel *ev_document_model_new_with_document (EvDocument      *document);