Remove deprecated slow epoch boundary methods (#21568)

validator/src/main.rs

@@ -1613,14 +1613,6 @@ pub fn main() {
                 .help("Allow contacting private ip addresses")
                 .hidden(true),
         )
-        .arg(
-            Arg::with_name("disable_epoch_boundary_optimization")
-                .long("disable-epoch-boundary-optimization")
-                .takes_value(false)
-                .help("Disables epoch boundary optimization and overrides the \
-                optimize_epoch_boundary_updates feature switch if enabled.")
-                .hidden(true),
-        )
         .after_help("The default subcommand is run")
         .subcommand(
             SubCommand::with_name("exit")
@@ -2291,8 +2283,6 @@ pub fn main() {
         tpu_coalesce_ms,
         no_wait_for_vote_to_start_leader: matches.is_present("no_wait_for_vote_to_start_leader"),
         accounts_shrink_ratio,
-        disable_epoch_boundary_optimization: matches
-            .is_present("disable_epoch_boundary_optimization"),
         ..ValidatorConfig::default()
     };