Revert "Revert "Disable accounts squash call from bank""

This reverts commit f84593ad5f.

runtime/src/accounts.rs

@@ -727,6 +727,7 @@ impl AccountsDB {
             .map_or(0, |fork_info| fork_info.transaction_count)
     }
 
+    #[allow(dead_code)]
     fn remove_parents(&self, fork: Fork) -> Vec<Fork> {
         let mut info = self.fork_infos.write().unwrap();
         let fork_info = info.get_mut(&fork).unwrap();
@@ -743,6 +744,7 @@ impl AccountsDB {
             .is_empty()
     }
 
+    #[allow(dead_code)]
     fn get_merged_account_map(
         &self,
         fork: Fork,
@@ -763,6 +765,7 @@ impl AccountsDB {
     }
 
     /// make fork a root, i.e. forget its heritage
+    #[allow(dead_code)]
     fn squash(&self, fork: Fork) {
         let parents = self.remove_parents(fork);
 
@@ -991,6 +994,7 @@ impl Accounts {
 
     /// accounts starts with an empty data structure for every child/fork
     ///   this function squashes all the parents into this instance
+    #[allow(dead_code)]
     pub fn squash(&self, fork: Fork) {
         assert!(!self.account_locks.lock().unwrap().contains_key(&fork));
         self.accounts_db.squash(fork);

runtime/src/bank.rs

@@ -301,7 +301,7 @@ impl Bank {
         let parents = self.parents();
         *self.parent.write().unwrap() = None;
 
-        self.accounts().squash(self.accounts_id);
+        // self.accounts().squash(self.accounts_id);
 
         let parent_caches: Vec<_> = parents
             .iter()