use std::convert::TryInto instead of using crate

Cargo.toml

@@ -24,7 +24,6 @@ serde_qs = "0.6.0"
 url = "2.1.1"
 tap-reader = "1"
 toml = { version = "0.5.0", optional = true }
-try_from = "0.3.2"
 tungstenite = "0.11.0"
 
 [dependencies.chrono]

src/apps.rs

@@ -1,7 +1,7 @@
 use std::borrow::Cow;
 
 use serde::Serialize;
-use try_from::TryInto;
+use std::convert::TryInto;
 
 use crate::{
     errors::{Error, Result},
@@ -132,16 +132,8 @@ impl<'a> AppBuilder<'a> {
     }
 }
 
-impl TryInto<App> for App {
-    type Err = Error;
-
-    fn try_into(self) -> Result<App> {
-        Ok(self)
-    }
-}
-
 impl<'a> TryInto<App> for AppBuilder<'a> {
-    type Err = Error;
+    type Error = Error;
 
     fn try_into(self) -> Result<App> {
         Ok(self.build()?)

src/registration.rs

@@ -2,7 +2,7 @@ use std::borrow::Cow;
 
 use reqwest::blocking::{Client, RequestBuilder, Response};
 use serde::Deserialize;
-use try_from::TryInto;
+use std::convert::TryInto;
 
 use crate::{
     apps::{App, AppBuilder},
@@ -125,7 +125,7 @@ impl<'a> Registration<'a> {
     /// ```
     pub fn register<I: TryInto<App>>(&mut self, app: I) -> Result<Registered>
     where
-        Error: From<<I as TryInto<App>>::Err>,
+        Error: From<<I as TryInto<App>>::Error>,
     {
         let app = app.try_into()?;
         let oauth = self.send_app(&app)?;