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/viewers/griddle.rs

@@ -114,7 +114,7 @@ prints out the list properly."#
                 // dbg!("value::record");
                 let mut items = vec![];
 
-                for (i, (c, v)) in cols.into_iter().zip(vals.into_iter()).enumerate() {
+                for (i, (c, v)) in cols.into_iter().zip(vals).enumerate() {
                     items.push((i, c, v.into_string(", ", config)))
                 }