[core] Trim StyleObserver interface

It doesn't need to inherit from SpriteLoaderObserver and GlyphAtlasObserver.

1 files changed, 1 insertions, 5 deletions

diff --git a/src/mbgl/style/observer.hpp b/src/mbgl/style/observer.hpp
index 77d97685be..3b2c0db3c0 100644
--- a/src/mbgl/style/observer.hpp
+++ b/src/mbgl/style/observer.hpp
@@ -1,7 +1,5 @@
 #pragma once
 
-#include <mbgl/text/glyph_atlas_observer.hpp>
-#include <mbgl/sprite/sprite_loader_observer.hpp>
 #include <mbgl/style/source_observer.hpp>
 #include <mbgl/map/update.hpp>
 
@@ -10,9 +8,7 @@
 namespace mbgl {
 namespace style {
 
-class Observer : public GlyphAtlasObserver,
-                 public SpriteLoaderObserver,
-                 public SourceObserver {
+class Observer : public SourceObserver {
 public:
     virtual void onUpdate(Update) {}
     virtual void onStyleError(std::exception_ptr) {}