* Remove unactivated ristretto syscall (#16727)
(cherry picked from commit be4df39a4c
)
# Conflicts:
# programs/bpf/Cargo.lock
# programs/bpf/rust/ristretto/Cargo.toml
# programs/bpf/tests/programs.rs
# programs/bpf_loader/src/syscalls.rs
# sdk/src/feature_set.rs
* fix conflicts
Co-authored-by: Jack May <jack@solana.com>