Merge #966: Clean up import aliases

7307363 Use qualified path instead of alias (Tobin C. Harding)
80e0fb7 Remove unnecessary 'as' statement (Tobin C. Harding)
21e1b9d Use secp256k1 qualified path instead of underscore (Tobin C. Harding)

Pull request description:

  Three trivial clean ups of import aliases.

ACKs for top commit:
  apoelstra:
    ACK 7307363
  sanket1729:
    ACK 7307363. These are clean improvements
  Kixunil:
    ACK 7307363

Tree-SHA512: f6ed3ede11d2803dbcb4584f11632fc47d28e525b5bf4de7794d400117f2d7c9ffce5bdff274877a63a519d5799bba2224fc39105d623da4bccad863005e171f

src/blockdata/constants.rs

@@ -23,7 +23,7 @@ use prelude::*;
 
 use core::default::Default;
 
-use hashes::hex::{HexIterator, Error as HexError};
+use hashes::hex::{self, HexIterator};
 use hashes::sha256d;
 use blockdata::opcodes;
 use blockdata::script;
@@ -99,7 +99,7 @@ fn bitcoin_genesis_tx() -> Transaction {
     });
 
     // Outputs
-    let script_bytes: Result<Vec<u8>, HexError> =
+    let script_bytes: Result<Vec<u8>, hex::Error> =
         HexIterator::new("04678afdb0fe5548271967f1a67130b7105cd6a828e03909a67962e0ea1f61deb649f6bc3f4cef38c4f35504e51ec112de5c384df7ba0b8d578a4c702b6bf11d5f").unwrap()
             .collect();
     let out_script = script::Builder::new()

src/util/bip158.rs

@@ -47,7 +47,7 @@
 
 use prelude::*;
 
-use io::{self as io, Cursor};
+use io::{self, Cursor};
 use core::fmt::{self, Display, Formatter};
 use core::cmp::{self, Ordering};
 

src/util/schnorr.rs

@@ -20,20 +20,18 @@
 use core::fmt;
 use prelude::*;
 
-use secp256k1::{XOnlyPublicKey as _XOnlyPublicKey, KeyPair as _KeyPair};
-
 use secp256k1::{self, Secp256k1, Verification, constants};
 use hashes::Hash;
 use util::taproot::{TapBranchHash, TapTweakHash};
 use SchnorrSighashType;
 
 /// Deprecated re-export of [`secp256k1::XOnlyPublicKey`]
 #[deprecated(since = "0.28.0", note = "Please use `util::key::XOnlyPublicKey` instead")]
-pub type XOnlyPublicKey = _XOnlyPublicKey;
+pub type XOnlyPublicKey = secp256k1::XOnlyPublicKey;
 
 /// Deprecated re-export of [`secp256k1::KeyPair`]
 #[deprecated(since = "0.28.0", note = "Please use `util::key::KeyPair` instead")]
-pub type KeyPair = _KeyPair;
+pub type KeyPair = secp256k1::KeyPair;
 
 /// Untweaked BIP-340 X-coord-only public key
 pub type UntweakedPublicKey = ::XOnlyPublicKey;