refactor: remove service_name (#8606)

Which issue # does this PR address?
#8586


  Please list or describe the changes introduced by this PR.
Remove `service_name` from `TaskExecutor`


Co-Authored-By: Abhivansh <31abhivanshj@gmail.com>

beacon_node/lighthouse_network/tests/common.rs

@@ -118,7 +118,6 @@ pub async fn build_libp2p_instance(
     boot_nodes: Vec<Enr>,
     fork_name: ForkName,
     chain_spec: Arc<ChainSpec>,
-    service_name: String,
     disable_peer_scoring: bool,
     inbound_rate_limiter: Option<InboundRateLimiterConfig>,
 ) -> Libp2pInstance {
@@ -127,7 +126,7 @@ pub async fn build_libp2p_instance(
 
     let (signal, exit) = async_channel::bounded(1);
     let (shutdown_tx, _) = futures::channel::mpsc::channel(1);
-    let executor = task_executor::TaskExecutor::new(rt, exit, shutdown_tx, service_name);
+    let executor = task_executor::TaskExecutor::new(rt, exit, shutdown_tx);
     let custody_group_count = chain_spec.custody_requirement;
     let libp2p_context = lighthouse_network::Context {
         config,
@@ -177,7 +176,6 @@ pub async fn build_node_pair(
         vec![],
         fork_name,
         spec.clone(),
-        "sender".to_string(),
         disable_peer_scoring,
         inbound_rate_limiter.clone(),
     )
@@ -187,7 +185,6 @@ pub async fn build_node_pair(
         vec![],
         fork_name,
         spec.clone(),
-        "receiver".to_string(),
         disable_peer_scoring,
         inbound_rate_limiter,
     )
@@ -266,16 +263,7 @@ pub async fn build_linear(
     let mut nodes = Vec::with_capacity(n);
     for _ in 0..n {
         nodes.push(
-            build_libp2p_instance(
-                rt.clone(),
-                vec![],
-                fork_name,
-                spec.clone(),
-                "linear".to_string(),
-                false,
-                None,
-            )
-            .await,
+            build_libp2p_instance(rt.clone(), vec![], fork_name, spec.clone(), false, None).await,
         );
     }