features

Hey guys, please help me with this feature out, actually i dont wanna see this when i open the part tree, i wanna access to the features like b4 and i wanna ask you if this function make the large assemblies lighter or has no effect.

Previously when i opened the tree i could have seen the features directly, but now  not.

Your helps are appreciated in advanced.

Mohsen.

SolidworksParts And Features