Remove unused dependencies and imports, cleanup Cargo.lock

- Removed `smoltcp`, `defmt`, and associated dependencies as they are no longer used.
- Updated `Cargo.toml` to exclude unused features from `esp-radio`.
- Cleaned up imports in `esp.rs` for better clarity and consistency.

Software/MainBoard/rust/Cargo.toml

@@ -52,7 +52,7 @@ esp-rtos = { version = "0.2.0", features = ["esp32c6", "embassy", "esp-radio"] }
 esp-backtrace = { version = "0.18.1", features = ["esp32c6", "panic-handler", "println", "colors", "custom-halt"] }
 esp-println = { version = "0.16.1", features = ["esp32c6", "log-04", "auto"] }
 esp-storage = { version = "0.8.1", features = ["esp32c6"] }
-esp-radio = { version = "0.17.0", features = ["esp32c6", "log-04", "smoltcp", "wifi", "unstable"] }
+esp-radio = { version = "0.17.0", features = ["esp32c6", "log-04", "wifi", "unstable"] }
 esp-alloc = { version = "0.9.0", features = ["esp32c6", "internal-heap-stats"] }
 
 # Async runtime (Embassy core)
@@ -70,21 +70,6 @@ embassy-net = { version = "0.7.1", features = [
     "proto-ipv4",
     "dns"
 ] }
-smoltcp = { version = "0.12.0", default-features = false, features = [
-    "alloc",
-    "log",
-    "medium-ethernet",
-    "multicast",
-    "proto-dhcpv4",
-    "proto-ipv6",
-    "proto-dns",
-    "proto-ipv4",
-    "socket-dns",
-    "socket-icmp",
-    "socket-raw",
-    "socket-tcp",
-    "socket-udp",
-] }
 sntpc = { version = "0.6.1", default-features = false, features = ["log", "embassy-socket", "embassy-socket-ipv6"] }
 edge-dhcp = "0.6.0"
 edge-nal = "0.5.0"