Revert "chore: Try out rayon for data parallelism"

This reverts commit 8d9e269.

No longer needed, but wanted to keep the code around for reference.

Execute with `cargo bench rayon`.

Cargo.toml

@@ -27,7 +27,6 @@ unicode_titlecase = "2.2.1"
 fst = "0.4.7"
 once_cell = "1.18.0"
 decompound = "0.3.0"
-rayon = "1.7.0"
 
 [features]
 default = ["all"]
@@ -61,7 +60,3 @@ rayon = "1.7.0"
 [[bench]]
 name = "threading"
 harness = false
-
-[[bench]]
-name = "rayon"
-harness = false

src/lib.rs

@@ -18,7 +18,6 @@
 
 pub use crate::stages::Stage;
 use log::{debug, info};
-use rayon::prelude::*;
 use std::io::{BufRead, Error, Write};
 
 /// Internal macros. Have to live here to be usable in unit, not just integration
@@ -93,28 +92,3 @@ pub fn apply(
     info!("Exiting");
     Ok(())
 }
-
-/// Docs
-/// # Errors
-/// None. Life is perfect.
-pub fn apply_par(
-    stages: &Vec<Box<dyn Stage>>,
-    source: &mut impl BufRead,
-    destination: &mut impl Write,
-) -> Result<(), Error> {
-    let mut lines = source.lines().collect::<Result<Vec<_>, _>>()?;
-
-    lines.par_iter_mut().try_for_each(|line| {
-        for stage in stages {
-            let result = stage.substitute(line)?;
-            *line = result.0;
-        }
-        Ok::<(), Error>(())
-    })?;
-
-    for line in lines {
-        destination.write_all(line.as_bytes())?;
-    }
-
-    Ok(())
-}