Get rid of mostly unused Justfile.recipes() (#98)

src/app.rs

@@ -199,7 +199,7 @@ pub fn app() {
     if justfile.count() == 0 {
       warn!("Justfile contains no recipes.");
     } else {
-      println!("{}", justfile.recipes().join(" "));
+      println!("{}", justfile.recipes.keys().cloned().collect::<Vec<_>>().join(" "));
     }
     process::exit(0);
   }

src/lib.rs

@@ -1062,10 +1062,6 @@ impl<'a, 'b> Justfile<'a> where 'a: 'b {
     self.recipes.len()
   }
 
-  fn recipes(&self) -> Vec<&'a str> {
-    self.recipes.keys().cloned().collect()
-  }
-
   fn suggest(&self, name: &str) -> Option<&'a str> {
     let mut suggestions = self.recipes.keys()
       .map(|suggestion| (edit_distance::edit_distance(suggestion, name), suggestion))