I made a copy of a vst live project by copying the entire project folder, then I opened the .vlprj folder in the new folder and removed all things which I don’t need. But the plugassets folder size is still 200+mb size.
Then I made another copy of the old project, this time I just coped the .vlprj project file only to a new folder and opened the project in vst live. This time the plugassets is only 9+mb.