Remove primitives::constants module

Inline the code out of `primitives/constants.rs` into
`primitives/mod.rs`.

Refactor only, no logic changes.

bitcoin/src/address.rs

@@ -36,7 +36,7 @@ use crate::hashes::{sha256, Hash, HashEngine};
 use crate::internal_macros::serde_string_impl;
 use crate::network::constants::Network;
 use crate::prelude::*;
-use crate::primitives::constants::{
+use crate::primitives::{
     MAX_SCRIPT_ELEMENT_SIZE, PUBKEY_ADDRESS_PREFIX_MAIN, PUBKEY_ADDRESS_PREFIX_TEST,
     SCRIPT_ADDRESS_PREFIX_MAIN, SCRIPT_ADDRESS_PREFIX_TEST,
 };

bitcoin/src/lib.rs

@@ -100,7 +100,6 @@ pub use crate::consensus::encode::VarInt;
 pub use crate::hash_types::*;
 pub use crate::network::constants::Network;
 pub use crate::primitives::block::{self, Block, BlockHeader, BlockVersion};
-pub use crate::primitives::constants;
 pub use crate::primitives::locktime::{self, absolute, relative};
 pub use crate::primitives::transaction::{self, OutPoint, Sequence, Transaction, TxIn, TxOut};
 pub use crate::primitives::witness::{self, Witness};

bitcoin/src/policy.rs

@@ -15,7 +15,7 @@
 
 use core::cmp;
 
-use super::primitives::constants::{MAX_BLOCK_SIGOPS_COST, WITNESS_SCALE_FACTOR};
+use super::primitives::{MAX_BLOCK_SIGOPS_COST, WITNESS_SCALE_FACTOR};
 
 /// Maximum weight of a transaction for it to be relayed by most nodes on the network
 pub const MAX_STANDARD_TX_WEIGHT: u32 = 400_000;

bitcoin/src/primitives/block.rs

@@ -22,7 +22,7 @@ use crate::util::uint::Uint256;
 use crate::consensus::{encode, Encodable, Decodable};
 use crate::network::constants::Network;
 use crate::primitives::transaction::Transaction;
-use crate::primitives::constants::{max_target, WITNESS_SCALE_FACTOR};
+use crate::primitives::{max_target, WITNESS_SCALE_FACTOR};
 use crate::script;
 use crate::VarInt;
 use crate::internal_macros::impl_consensus_encoding;