Library Components Folder

I started to use some standard nuts and washers from solidworks library in an assembly, and when I checked the assembly into the vault it created a 'Library Components' folder with these washers in.

I dragged the washer i wanted out of the library, saved it as a part number, and it got checked into the vault.

I now want to just model up washers and bolts myself and have them as normal parts. However, I want to now delete the Library Components folder, and I cannot do this. I cannot even delete parts in the folder. This is frustrating as I want to check in my own modeled up bolt (eg, Bolt001) but it won't go into the vault as the library generated part number i did initially (eg, Bolt001) is in the vault.....

SolidworksWorkgroup Pdm