fix(ci): remove usage of bitcoin/no-std feature

- remove comment: `# The `no-std` feature it's implied when the `std` feature is disabled.`

.github/workflows/cont_integration.yml

@@ -58,15 +58,15 @@ jobs:
       - name: Check bdk_chain
         working-directory: ./crates/chain
         # TODO "--target thumbv6m-none-eabi" should work but currently does not
-        run: cargo check --no-default-features --features bitcoin/no-std,miniscript/no-std,hashbrown
+        run: cargo check --no-default-features --features miniscript/no-std,hashbrown
       - name: Check bdk wallet
         working-directory: ./crates/wallet
         # TODO "--target thumbv6m-none-eabi" should work but currently does not
-        run: cargo check --no-default-features --features bitcoin/no-std,miniscript/no-std,bdk_chain/hashbrown
+        run: cargo check --no-default-features --features miniscript/no-std,bdk_chain/hashbrown
       - name: Check esplora
         working-directory: ./crates/esplora
         # TODO "--target thumbv6m-none-eabi" should work but currently does not
-        run: cargo check --no-default-features --features bitcoin/no-std,miniscript/no-std,bdk_chain/hashbrown
+        run: cargo check --no-default-features --features miniscript/no-std,bdk_chain/hashbrown
 
   check-wasm:
     name: Check WASM
@@ -92,10 +92,10 @@ jobs:
         uses: Swatinem/[email protected]
       - name: Check bdk wallet
         working-directory: ./crates/wallet
-        run: cargo check --target wasm32-unknown-unknown --no-default-features --features bitcoin/no-std,miniscript/no-std,bdk_chain/hashbrown,dev-getrandom-wasm
+        run: cargo check --target wasm32-unknown-unknown --no-default-features --features miniscript/no-std,bdk_chain/hashbrown,dev-getrandom-wasm
       - name: Check esplora
         working-directory: ./crates/esplora
-        run: cargo check --target wasm32-unknown-unknown --no-default-features --features bitcoin/no-std,miniscript/no-std,bdk_chain/hashbrown,async
+        run: cargo check --target wasm32-unknown-unknown --no-default-features --features miniscript/no-std,bdk_chain/hashbrown,async
 
   fmt:
     name: Rust fmt

crates/bitcoind_rpc/Cargo.toml

@@ -13,7 +13,6 @@ readme = "README.md"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-# The `no-std` feature it's implied when the `std` feature is disabled.
 bitcoin = { version = "0.32.0", default-features = false }
 bitcoincore-rpc = { version = "0.19.0" }
 bdk_chain = { path = "../chain", version = "0.15", default-features = false }

crates/chain/Cargo.toml

@@ -13,7 +13,6 @@ readme = "README.md"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-# The `no-std` feature it's implied when the `std` feature is disabled.
 bitcoin = { version = "0.32.0", default-features = false }
 serde_crate = { package = "serde", version = "1", optional = true, features = ["derive", "rc"] }
 

crates/esplora/Cargo.toml

@@ -17,7 +17,6 @@ esplora-client = { version = "0.8.0", default-features = false }
 async-trait = { version = "0.1.66", optional = true }
 futures = { version = "0.3.26", optional = true }
 
-# The `no-std` feature it's implied when the `std` feature is disabled.
 bitcoin = { version = "0.32.0", optional = true, default-features = false }
 miniscript = { version = "12.0.0", optional = true, default-features = false }