cleanup imports

src/types/closed_captions.rs

@@ -1,7 +1,8 @@
+use std::fmt;
+use std::str::FromStr;
+
 use crate::utils::{quote, unquote};
 use crate::{Error, Result};
-use std::fmt;
-use std::str::{self, FromStr};
 
 /// The identifier of a closed captions group or its absence.
 ///

src/types/initialization_vector.rs

@@ -1,6 +1,6 @@
 use std::fmt;
 use std::ops::Deref;
-use std::str::{self, FromStr};
+use std::str::FromStr;
 
 use crate::Error;
 
@@ -60,7 +60,7 @@ impl FromStr for InitializationVector {
 
         let mut v = [0; 16];
         for (i, c) in s.as_bytes().chunks(2).skip(1).enumerate() {
-            let d = str::from_utf8(c).map_err(|e| Error::custom(e))?;
+            let d = std::str::from_utf8(c).map_err(|e| Error::custom(e))?;
             let b = u8::from_str_radix(d, 16).map_err(|e| Error::custom(e))?;
             v[i] = b;
         }

src/types/media_type.rs

@@ -1,5 +1,5 @@
 use std::fmt;
-use std::str::{self, FromStr};
+use std::str::FromStr;
 
 use crate::Error;
 

src/types/protocol_version.rs

@@ -1,5 +1,5 @@
 use std::fmt;
-use std::str::{self, FromStr};
+use std::str::FromStr;
 
 use crate::Error;
 

src/types/signed_decimal_floating_point.rs

@@ -1,5 +1,5 @@
 use std::fmt;
-use std::str::{self, FromStr};
+use std::str::FromStr;
 
 use crate::Error;