Revert "IOMA-6234: copy patch from mapbox#8374 to prevent features cr…

…ashes on stale tiles"

This reverts commit a613b76.

src/mbgl/geometry/feature_index.cpp

@@ -157,9 +157,5 @@ void FeatureIndex::addBucketLayerName(const std::string& bucketName, const std::
 void FeatureIndex::setCollisionTile(std::unique_ptr<CollisionTile> collisionTile_) {
     collisionTile = std::move(collisionTile_);
 }
-
-void FeatureIndex::resetCollisionTile() {
-    collisionTile.reset();
-}
 
 } // namespace mbgl

src/mbgl/geometry/feature_index.hpp

@@ -54,7 +54,6 @@ class FeatureIndex {
     void addBucketLayerName(const std::string& bucketName, const std::string& layerName);
 
     void setCollisionTile(std::unique_ptr<CollisionTile>);
-    void resetCollisionTile();
 
 private:
     void addFeature(

src/mbgl/tile/geometry_tile.cpp

@@ -102,7 +102,6 @@ void GeometryTile::onLayout(LayoutResult result) {
     buckets = std::move(result.buckets);
     featureIndex = std::move(result.featureIndex);
     data = std::move(result.tileData);
-    featureIndex->resetCollisionTile();
     observer->onTileChanged(*this);
 }