Revert "require stake, vote and executable accounts to be rent exempt (#5928)" (#6005)

This reverts commit 11e6197a83.

programs/stake_api/src/stake_instruction.rs

@@ -110,7 +110,7 @@ pub fn create_stake_account_with_lockup(
     custodian: &Pubkey,
 ) -> Vec<Instruction> {
     vec![
-        system_instruction::create_rent_exempted_account(
+        system_instruction::create_account(
             from_pubkey,
             stake_pubkey,
             lamports,

programs/vote_api/src/vote_instruction.rs

@@ -87,13 +87,8 @@ pub fn create_account(
     lamports: u64,
 ) -> Vec<Instruction> {
     let space = VoteState::size_of() as u64;
-    let create_ix = system_instruction::create_rent_exempted_account(
-        from_pubkey,
-        vote_pubkey,
-        lamports,
-        space,
-        &id(),
-    );
+    let create_ix =
+        system_instruction::create_account(from_pubkey, vote_pubkey, lamports, space, &id());
     let init_ix = initialize_account(vote_pubkey, node_pubkey, commission);
     vec![create_ix, init_ix]
 }