fix no_std build

satrs/src/tmtc/mod.rs

@@ -7,22 +7,19 @@
 //! all received telecommands are sent to a special handler object called TC source. Using
 //! a design like this makes it simpler to add new TC packet sources or new telemetry generators:
 //! They only need to send the received and generated data to these objects.
-#[cfg(feature = "std")]
 use crate::queue::GenericSendError;
 use crate::{
-    pool::{PoolAddr, PoolError, PoolProvider},
+    pool::{PoolAddr, PoolError},
     ComponentId,
 };
 #[cfg(feature = "std")]
 pub use alloc_mod::*;
-use core::cell::RefCell;
 #[cfg(feature = "alloc")]
 use downcast_rs::{impl_downcast, Downcast};
 use spacepackets::{
     ecss::{
         tc::PusTcReader,
         tm::{PusTmCreator, PusTmReader},
-        WritablePusPacket,
     },
     SpHeader,
 };