Ignore clippy's erroneous warnings (#895)

crates/nu-command/src/filters/lines.rs

@@ -101,6 +101,7 @@ impl Command for Lines {
 
                 let split_char = if s.contains("\r\n") { "\r\n" } else { "\n" };
 
+                #[allow(clippy::needless_collect)]
                 let lines = s
                     .split(split_char)
                     .map(|s| s.to_string())

crates/nu-command/src/strings/detect_columns.rs

@@ -59,6 +59,7 @@ fn detect_columns(
     let config = stack.get_config()?;
     let input = input.collect_string("", &config)?;
 
+    #[allow(clippy::needless_collect)]
     let input: Vec<_> = input
         .lines()
         .skip(num_rows_to_skip.unwrap_or_default())