misc. cleanup (#30295)

runtime/src/accounts_hash.rs

@@ -113,15 +113,6 @@ pub struct CalcAccountsHashConfig<'a> {
     pub store_detailed_debug_info_on_failure: bool,
 }
 
-impl<'a> CalcAccountsHashConfig<'a> {
-    /// return true if we should cache accounts hash intermediate data between calls
-    pub fn get_should_cache_hash_data() -> bool {
-        // when we are skipping rewrites, we cannot rely on the cached data from old append vecs, so we have to disable caching for now
-        // skipping rewrites is not enabled in this branch. It requires a cli argument.
-        true
-    }
-}
-
 // smallest, 3 quartiles, largest, average
 pub type StorageSizeQuartileStats = [usize; 6];