Clean up use to keep rust 1.43.0 from complaining (bp #9740) (#9748)

* Clean up `use` to keep rust 1.43.0 from complaining (#9740) (cherry picked from commit c11abf88b7)
2020-04-27 23:21:32 -07:00
parent e46026f1fb
commit 0a0f8470d7
14 changed files with 27 additions and 48 deletions
--- a/ledger-tool/src/main.rs
+++ b/ledger-tool/src/main.rs
@@ -2,7 +2,6 @@ use clap::{
    crate_description, crate_name, value_t, value_t_or_exit, values_t_or_exit, App, Arg,
    ArgMatches, SubCommand,
 };
-use histogram;
 use serde_json::json;
 use solana_clap_utils::input_validators::is_slot;
 use solana_ledger::{