cleanup imports

program/src/open.rs

@@ -2,11 +2,7 @@ use std::mem::size_of;
 
 use ore_api::{consts::*, instruction::Open, state::Proof};
 use solana_program::{
-    account_info::AccountInfo,
-    clock::Clock,
-    entrypoint::ProgramResult,
     keccak::hashv,
-    program_error::ProgramError,
     slot_hashes::SlotHash,
     system_program,
     sysvar::{self, Sysvar},