Move Bullet physics query flush from Bullet space pre-tick callback to

Bullet physics flush_queries() as is done in Godot physics, and remove
the pre-tick callback.

modules/bullet/bullet_physics_server.cpp

@@ -1557,6 +1557,13 @@ void BulletPhysicsServer3D::sync() {
 }
 
 void BulletPhysicsServer3D::flush_queries() {
+	if (!active) {
+		return;
+	}
+
+	for (int i = 0; i < active_spaces_count; ++i) {
+		active_spaces[i]->flush_queries();
+	}
 }
 
 void BulletPhysicsServer3D::finish() {

modules/bullet/space_bullet.cpp

@@ -579,10 +579,6 @@ void SpaceBullet::remove_all_collision_objects() {
 	}
 }
 
-void onBulletPreTickCallback(btDynamicsWorld *p_dynamicsWorld, btScalar timeStep) {
-	static_cast<SpaceBullet *>(p_dynamicsWorld->getWorldUserInfo())->flush_queries();
-}
-
 void onBulletTickCallback(btDynamicsWorld *p_dynamicsWorld, btScalar timeStep) {
 	const btCollisionObjectArray &colObjArray = p_dynamicsWorld->getCollisionObjectArray();
 
@@ -650,7 +646,6 @@ void SpaceBullet::create_empty_world(bool p_create_soft_world) {
 
 	dynamicsWorld->setWorldUserInfo(this);
 
-	dynamicsWorld->setInternalTickCallback(onBulletPreTickCallback, this, true);
 	dynamicsWorld->setInternalTickCallback(onBulletTickCallback, this, false);
 	dynamicsWorld->getBroadphase()->getOverlappingPairCache()->setInternalGhostPairCallback(ghostPairCallback); // Setup ghost check
 	dynamicsWorld->getPairCache()->setOverlapFilterCallback(godotFilterCallback);