refactor: remove unnecessary return types

src/event.rs

@@ -295,15 +295,14 @@ mod tests {
     }
 
     #[test]
-    fn empty_event_tag_match() -> Result<()> {
+    fn empty_event_tag_match() {
         let event = simple_event();
         assert!(!event
             .generic_tag_val_intersect('e', &HashSet::from(["foo".to_owned(), "bar".to_owned()])));
-        Ok(())
     }
 
     #[test]
-    fn single_event_tag_match() -> Result<()> {
+    fn single_event_tag_match() {
         let mut event = simple_event();
         event.tags = vec![vec!["e".to_owned(), "foo".to_owned()]];
         event.build_index();
@@ -314,7 +313,6 @@ mod tests {
             ),
             true
         );
-        Ok(())
     }
 
     #[test]

src/main.rs

@@ -1,7 +1,6 @@
 //! Server process
 use log::info;
 use nostr_rs_relay::config;
-use nostr_rs_relay::error::{Error, Result};
 use nostr_rs_relay::server::start_server;
 use std::env;
 use std::sync::mpsc as syncmpsc;
@@ -19,7 +18,7 @@ fn db_from_args(args: Vec<String>) -> Option<String> {
 }
 
 /// Start running a Nostr relay server.
-fn main() -> Result<(), Error> {
+fn main() {
     // setup logger
     let _ = env_logger::try_init();
     info!("Starting up from main");
@@ -49,5 +48,4 @@ fn main() -> Result<(), Error> {
     });
     // block on nostr thread to finish.
     handle.join().unwrap();
-    Ok(())
 }