removed unused crate and feature

Cargo.toml

@@ -24,8 +24,6 @@ linked-hash-map = "0.5.*"
 tokio = { version = "1", features = ["full"] }
 num_cpus = "1.13.*"
 downcast-rs = "1.2.0"
-slack-hook = "0.8"
-dotenv = "0.15.*"
 hhmmss = "*"
 pbr = "*"
 hashbrown = "0.12.*"

src/notify/mod.rs

@@ -1 +0,0 @@
-pub mod slack;

src/notify/slack.rs

@@ -1,57 +0,0 @@
-extern crate slack_hook;
-use dotenv::dotenv;
-use slack_hook::{PayloadBuilder, Slack};
-use std::env;
-
-pub struct SlackNotify {}
-
-impl SlackNotify {
-    // Check if Slack is configured.
-    pub fn check_setting() -> bool {
-        dotenv().ok();
-        if env::var("CHANNEL").is_err() {
-            eprintln!("Channel not found");
-            return false;
-        }
-
-        if env::var("WEBHOOK_URL").is_err() {
-            eprintln!("WEBHOOK_URL not found");
-            return false;
-        }
-        true
-    }
-
-    // send message to slack.
-    pub fn notify(msg: String) -> Result<(), String> {
-        dotenv().ok();
-        if !SlackNotify::check_setting() {
-            return Ok(());
-        }
-
-        let channel = env::var("CHANNEL").expect("CHANNEL is not found");
-        let webhook_url = env::var("WEBHOOK_URL").expect("WEBHOOK_URL is not found");
-        let ret = SlackNotify::_send_to_slack(msg, &channel, &webhook_url);
-        if ret.is_ok() {
-            Ok(())
-        } else {
-            Err("Slack Notification Failed.".to_string())
-        }
-    }
-
-    fn _send_to_slack(
-        msg: String,
-        channel: &str,
-        webhook_url: &str,
-    ) -> Result<(), slack_hook::Error> {
-        let slack = Slack::new(webhook_url).unwrap();
-        let p = PayloadBuilder::new()
-            .text(msg)
-            .channel(channel)
-            .username("hayabusa Notify Bot")
-            .icon_emoji(":scream:")
-            .build()
-            .unwrap();
-
-        slack.send(&p)
-    }
-}