apply cargo warning suggested fixes

Signed-off-by: William Casarin <jb55@jb55.com>

src/timeline.rs

@@ -1,27 +1,3 @@
-pub fn binary_search<T: Ord>(a: &[T], item: &T) -> usize {
-    let mut low = 0;
-    let mut high = a.len();
-
-    while low < high {
-        let mid = low + (high - low) / 2;
-        if item <= &a[mid] {
-            high = mid;
-        } else {
-            low = mid + 1;
-        }
-    }
-
-    low
-}
-
-pub fn binary_insertion_sort<T: Ord>(vec: &mut Vec<T>) {
-    for i in 1..vec.len() {
-        let val = vec.remove(i);
-        let pos = binary_search(&vec[0..i], &val);
-        vec.insert(pos, val);
-    }
-}
-
 pub fn merge_sorted_vecs<T: Ord + Copy>(vec1: &Vec<T>, vec2: &Vec<T>) -> Vec<T> {
     let mut merged = Vec::with_capacity(vec1.len() + vec2.len());
     let mut i = 0;