Apply nightly clippy lints (#9654)

# Description
- A new one is the removal of unnecessary `#` in raw strings without `"`
inside.
-
https://rust-lang.github.io/rust-clippy/master/index.html#/needless_raw_string_hashes
- The automatically applied removal of `.into_iter()` touched several
places where #9648 will change to the use of the record API. If
necessary I can remove them @IanManske to avoid churn with this PR.
- Manually applied `.try_fold` in two places
- Removed a dead `if`
- Manual: Combat rightward-drift with early return

crates/nu-command/src/filesystem/start.rs

@@ -67,7 +67,7 @@ impl Command for Start {
             } else {
                 // open crate does not allow opening URL without prefix
                 let path_with_prefix = Path::new("https://").join(&path.item);
-                let common_domains = vec!["com", "net", "org", "edu", "sh"];
+                let common_domains = ["com", "net", "org", "edu", "sh"];
                 if let Some(url) = path_with_prefix.to_str() {
                     let url = url::Url::parse(url).map_err(|_| {
                         ShellError::GenericError(