zcash_primitives: Remove the deprecated 1000-ZAT DEFAULT_FEE constant

zcash_primitives/CHANGELOG.md

@@ -37,6 +37,8 @@ and this library adheres to Rust's notion of
 - `impl {PartialEq, Eq} for transaction::builder::Error` 
   (use `assert_matches!` where error comparisons are required)
 - `zcash_primitives::transaction::components::orchard::Unauthorized`
+- `zcash_primitives::transaction::components::amount::DEFAULT_FEE` was
+  deprecated in 0.12.0 and has now been removed.
 
 ## [0.12.0] - 2023-06-06
 ### Added

zcash_primitives/src/transaction/components/amount.rs

@@ -8,14 +8,6 @@ use orchard::value as orchard;
 pub const COIN: i64 = 1_0000_0000;
 pub const MAX_MONEY: i64 = 21_000_000 * COIN;
 
-#[deprecated(
-    since = "0.12.0",
-    note = "To calculate the ZIP 317 fee, use `transaction::fees::zip317::FeeRule`.
-For a constant representing the minimum ZIP 317 fee, use `transaction::fees::zip317::MINIMUM_FEE`.
-For the constant amount 1000 zatoshis, use `Amount::const_from_i64(1000)`."
-)]
-pub const DEFAULT_FEE: Amount = Amount(1000);
-
 /// A type-safe representation of some quantity of Zcash.
 ///
 /// An Amount can only be constructed from an integer that is within the valid monetary