boards: remove firmware feature gates

boards/geprc-f722-v2/README.md

@@ -3,5 +3,5 @@
 Build from the workspace root:
 
 ```sh
-cargo build --release -p kaptan-geprc-f722-v2 --features firmware --target thumbv7em-none-eabihf
+cargo build --release -p kaptan-geprc-f722-v2 --target thumbv7em-none-eabihf
 ```

boards/kakute-f7-mini-v3/Cargo.toml

@@ -10,7 +10,6 @@ version.workspace = true
 workspace = true
 
 [features]
-firmware = []
 lidar-lite-v3 = []
 
 [dependencies]
@@ -20,6 +19,5 @@ platform-stm32f7 = { path = "../../platforms/stm32f7" }
 [[bin]]
 name = "kaptan-kakute-f7-mini-v3"
 path = "src/main.rs"
-required-features = ["firmware"]
 test = false
 bench = false

boards/kakute-f7-mini-v3/README.md

@@ -9,7 +9,7 @@ The checked-in manufacturer manual is [Holybro_KakuteF7_Mini_V3_Manual_v1.0.pdf]
 Build the firmware from the workspace root:
 
 ```sh
-cargo build --release -p kaptan-kakute-f7-mini-v3 --features firmware --target thumbv7em-none-eabihf
+cargo build --release -p kaptan-kakute-f7-mini-v3 --target thumbv7em-none-eabihf
 ```
 
 Create its DFU (device firmware update) image: