Remove unused methods from ServeSession and clean up syncback logic

- Deleted the `project_port` and `serve_address` methods from the `ServeSession` implementation as they were no longer needed.
- Removed the `scan_directory` and `normalize_existing_path` helper functions from the `syncback_loop_with_stats` function, streamlining the code and improving maintainability.

These changes aim to enhance code clarity and reduce unnecessary complexity in the session and syncback functionalities.

src/serve_session.rs

@@ -1,7 +1,6 @@
 use std::{
     collections::HashSet,
     io,
-    net::IpAddr,
     path::{Path, PathBuf},
     sync::{Arc, Mutex, MutexGuard},
     time::Instant,
@@ -456,10 +455,6 @@ impl ServeSession {
             .expect("all top-level projects must have their name set")
     }
 
-    pub fn project_port(&self) -> Option<u16> {
-        self.root_project.serve_port
-    }
-
     pub fn place_id(&self) -> Option<u64> {
         self.root_project.place_id
     }
@@ -480,10 +475,6 @@ impl ServeSession {
         self.root_project.blocked_place_ids.as_ref()
     }
 
-    pub fn serve_address(&self) -> Option<IpAddr> {
-        self.root_project.serve_address
-    }
-
     pub fn root_dir(&self) -> &Path {
         self.root_project.folder_location()
     }