remove zathura->global.update_page_number global hack

The callbacks are no longer aware of it anyways

marks.c

@@ -244,7 +244,6 @@ mark_evaluate(zathura_t* zathura, int key)
     position_set(zathura, mark->position_x, mark->position_y);
     zathura_jumplist_add(zathura);
 
-    zathura->global.update_page_number = true;
     return;
   }
   GIRARA_LIST_FOREACH_END(zathura->global.marks, zathura_mark_t*, iter, mark);

shortcuts.c

@@ -305,7 +305,6 @@ sc_mouse_scroll(girara_session_t* session, girara_argument_t* argument, girara_e
           gtk_adjustment_get_value(x_adj) - (event->x - x));
       zathura_adjustment_set_value(y_adj,
           gtk_adjustment_get_value(y_adj) - (event->y - y));
-      zathura->global.update_page_number = true;
       break;
 
       /* unhandled events */

zathura.c

@@ -55,7 +55,6 @@ zathura_create(void)
   zathura_t* zathura = g_malloc0(sizeof(zathura_t));
 
   /* global settings */
-  zathura->global.update_page_number = true;
   zathura->global.search_direction = FORWARD;
 
   /* plugins */
@@ -1115,10 +1114,6 @@ position_set(zathura_t* zathura, double position_x, double position_y)
   zathura_document_set_position_x(zathura->document, position_x);
   zathura_document_set_position_y(zathura->document, position_y);
 
-  /* prevent cb_view_adjustment_value_changed from updating document page number and
-     position from the adjustments. */
-  zathura->global.update_page_number = false;
-
   /* trigger a 'change' event for both adjustments */
   refresh_view(zathura);
 

zathura.h

@@ -101,7 +101,6 @@ struct zathura_s
 
   struct
   {
-    bool update_page_number; /**< Update current page number */
     int search_direction; /**< Current search direction (FORWARD or BACKWARD) */
     girara_list_t* marks; /**< Marker */
     char** arguments; /**> Arguments that were passed at startup */