I heard they removed it due to money laundery. What I don't get is why Shared Coin is still available then since it basically is the same.
Shared Send wasn't removed for any specific legal concern, Shared Coin is replacing Shared Send as it is better technology which is more in keeping with the client side wallet approach. Blockchain is a software company not a financial institution and hence want to offer client side products only (No handling of private keys).
Can someone explain the difference of both and the system of how Shared Coin works? I never used it.
This is a good explanation
https://bitcointalk.org/index.php?topic=325594.msg3697300#msg3697300.