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/src/hal/esp.rs

@@ -13,7 +13,8 @@ use alloc::{format, string::String, vec, vec::Vec};
 use core::net::{IpAddr, Ipv4Addr, SocketAddr};
 use core::sync::atomic::Ordering;
 use embassy_executor::Spawner;
-use embassy_net::udp::UdpSocket;
+use embassy_net::dns::DnsQueryType;
+use embassy_net::udp::{PacketMetadata, UdpSocket};
 use embassy_net::{DhcpConfig, Ipv4Cidr, Runner, Stack, StackResources, StaticConfigV4};
 use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
 use embassy_sync::mutex::Mutex;
@@ -43,8 +44,6 @@ use mcutie::{
     QoS, Topic,
 };
 use portable_atomic::AtomicBool;
-use smoltcp::socket::udp::PacketMetadata;
-use smoltcp::wire::DnsQueryType;
 use sntpc::{get_time, NtpContext, NtpTimestampGenerator};
 
 #[esp_hal::ram(unstable(rtc_fast), unstable(persistent))]