Change commit dates to formatTimestamp fn

Signed-off-by: Sebastian Martinez <me@sebastinez.dev>

src/commit.ts

@@ -129,13 +129,6 @@ export function groupCommits(commits: { header: CommitHeader; context: CommitCon
   }
 }
 
-export const formatCommitTime = (t: number): string => {
-  const options: any = {
-    hour: "2-digit", minute: "2-digit", timeZoneName: "short", hour12: false
-  };
-  return new Date(t * 1000).toLocaleTimeString("en-us", options);
-};
-
 export function groupCommitsByWeek(commits: CommitMetadata[]): CommitGroup[] {
   const groupedCommits: CommitGroup[] = [];
   let groupDate: Date | undefined = undefined;