[libshumate] viewport: Remove zoom_in/zoom_out

[Corentin Noël <corentinnoel src gnome org>]

commit 39289458aa59b5f85a0bcdf52a4d3d1bf7653bbd
Author: James Westman <james jwestman net>
Date:   Tue Apr 26 12:19:16 2022 -0500

    viewport: Remove zoom_in/zoom_out
    
    Replaced by the ShumateMap methods.

 shumate/shumate-viewport.c | 35 -----------------------------------
 shumate/shumate-viewport.h |  3 ---
 2 files changed, 38 deletions(-)
---
diff --git a/shumate/shumate-viewport.c b/shumate/shumate-viewport.c
index ce8a06f..fdb7458 100644
--- a/shumate/shumate-viewport.c
+++ b/shumate/shumate-viewport.c
@@ -433,41 +433,6 @@ shumate_viewport_get_min_zoom_level (ShumateViewport *self)
   return self->min_zoom_level;
 }
 
-/**
- * shumate_viewport_zoom_in:
- * @self: a #ShumateViewport
- *
- * Increases the zoom level
- */
-void shumate_viewport_zoom_in (ShumateViewport *self)
-{
-  double zoom_level;
-
-  g_return_if_fail (SHUMATE_IS_VIEWPORT (self));
-
-  /* Round to the nearest 1/5 of a zoom level to prevent floating point
-   * error accumulation. */
-
-  zoom_level = roundf ((self->zoom_level + 0.2) * 5) / 5;
-  shumate_viewport_set_zoom_level (self, zoom_level);
-}
-
-/**
- * shumate_viewport_zoom_out:
- * @self: a #ShumateViewport
- *
- * Decreases the zoom level
- */
-void shumate_viewport_zoom_out (ShumateViewport *self)
-{
-  double zoom_level;
-
-  g_return_if_fail (SHUMATE_IS_VIEWPORT (self));
-
-  zoom_level = roundf ((self->zoom_level - 0.2) * 5) / 5;
-  shumate_viewport_set_zoom_level (self, zoom_level);
-}
-
 /**
  * shumate_viewport_set_reference_map_source:
  * @self: a #ShumateViewport
diff --git a/shumate/shumate-viewport.h b/shumate/shumate-viewport.h
index 90cc0e2..b23db2e 100644
--- a/shumate/shumate-viewport.h
+++ b/shumate/shumate-viewport.h
@@ -49,9 +49,6 @@ void shumate_viewport_set_min_zoom_level (ShumateViewport *self,
                                           guint            min_zoom_level);
 guint shumate_viewport_get_min_zoom_level (ShumateViewport *self);
 
-void shumate_viewport_zoom_in (ShumateViewport *self);
-void shumate_viewport_zoom_out (ShumateViewport *self);
-
 void shumate_viewport_set_reference_map_source (ShumateViewport  *self,
                                                 ShumateMapSource *map_source);
 ShumateMapSource *shumate_viewport_get_reference_map_source (ShumateViewport  *self);