Remove RAM stored mesh data

Remove RAM stored vertices and indices data. It is now stored only in
GPU memory.

graphics/src/mesh_controller.h

@@ -22,12 +22,9 @@
 struct rse_mesh_t
 {
     uint32_t unique_id;
-    size_t instances_count;
-    size_t indices_count;
     size_t vertices_count;
-    struct rse_vertex_t* vertices;
-    uint16_t* indices;
-    struct rse_instance_data_t* instances;
+    size_t indices_count;
+    size_t instances_count;
 };
 
 /**
@@ -76,29 +73,6 @@ size_t get_indices_count(uint16_t mesh_id);
  */
 size_t get_instances_count(uint16_t mesh_id);
 
-/**
- * @brief Get pointer to vertices of mesh
- *
- * @param mesh_id Mesh identifier
- * @return struct rse_vertex_t* Vertex data
- */
-struct rse_vertex_t* get_mesh_vertices(uint16_t mesh_id);
-
-/**
- * @brief Get pointer to indices of mesh
- *
- * @param mesh_id Mesh identifier
- * @return uint16_t* Indices data
- */
-uint16_t* get_mesh_indices(uint16_t mesh_id);
-
-/**
- * @brief Get the instance data for mesh object.
- *
- * @param mesh_id Mesh identifier
- * @return struct rse_instance_data_t* Pointer to instances array
- */
-struct rse_instance_data_t* get_instance_data_for_mesh(uint16_t mesh_id);
 
 
 #endif /* RSE_MESH_CONTROLLER_H */