Move KeyedAccount out of solana-program. Native programs are not supported by solana-program

sdk/program/src/sysvar/mod.rs

@@ -1,11 +1,7 @@
 //! named accounts for synthesized data accounts for bank state, etc.
 //!
 use crate::{
-    account::{Account, KeyedAccount},
-    account_info::AccountInfo,
-    instruction::InstructionError,
-    program_error::ProgramError,
-    pubkey::Pubkey,
+    account::Account, account_info::AccountInfo, program_error::ProgramError, pubkey::Pubkey,
 };
 
 pub mod clock;
@@ -79,13 +75,6 @@ pub trait Sysvar:
     fn to_account_info(&self, account_info: &mut AccountInfo) -> Option<()> {
         bincode::serialize_into(&mut account_info.data.borrow_mut()[..], self).ok()
     }
-    fn from_keyed_account(keyed_account: &KeyedAccount) -> Result<Self, InstructionError> {
-        if !Self::check_id(keyed_account.unsigned_key()) {
-            return Err(InstructionError::InvalidArgument);
-        }
-        Self::from_account(&*keyed_account.try_account_ref()?)
-            .ok_or(InstructionError::InvalidArgument)
-    }
     fn create_account(&self, lamports: u64) -> Account {
         let data_len = Self::size_of().max(bincode::serialized_size(self).unwrap() as usize);
         let mut account = Account::new(lamports, data_len, &id());

sdk/program/src/sysvar/rent.rs

@@ -2,11 +2,7 @@
 //!
 pub use crate::rent::Rent;
 
-use crate::{
-    account::{Account, KeyedAccount},
-    instruction::InstructionError,
-    sysvar::Sysvar,
-};
+use crate::{account::Account, sysvar::Sysvar};
 
 crate::declare_sysvar_id!("SysvarRent111111111111111111111111111111111", Rent);
 
@@ -16,18 +12,6 @@ pub fn create_account(lamports: u64, rent: &Rent) -> Account {
     rent.create_account(lamports)
 }
 
-pub fn verify_rent_exemption(
-    keyed_account: &KeyedAccount,
-    rent_sysvar_account: &KeyedAccount,
-) -> Result<(), InstructionError> {
-    let rent = Rent::from_keyed_account(rent_sysvar_account)?;
-    if !rent.is_exempt(keyed_account.lamports()?, keyed_account.data_len()?) {
-        Err(InstructionError::InsufficientFunds)
-    } else {
-        Ok(())
-    }
-}
-
 #[cfg(test)]
 mod tests {
     use super::*;