Dear Patil,
No this is not supported. In a sales order you can either select or deselect sales kit at header level only.
yellow - Header
Saffron - Item - As you an see when we select item 'Remove' is disabled.
This is the standard system behavior and system behaves as designed.
If this resolved your thread, mark them as answered.
P, s: If you want to ship one product less or more from sales kit, kindly create a SO for individual product rather than creating a sales kit. Kindly explain your business use-case.
Regards
Leo