remove unneeded arg

program/src/update.rs

@@ -1,14 +1,12 @@
 use ore_api::{loaders::*, state::Proof};
 use solana_program::{
     account_info::AccountInfo, entrypoint::ProgramResult, program_error::ProgramError,
-    pubkey::Pubkey,
 };
 
 use crate::utils::AccountDeserialize;
 
 /// Update changes the miner authority on a proof account.
 pub fn process_update<'a, 'info>(
-    _program_id: &Pubkey,
     accounts: &'a [AccountInfo<'info>],
     _data: &[u8],
 ) -> ProgramResult {