report: Remove write_hex

We can just serialize the raw bytes into a file, rather than write them
in hexadecimal.

Signed-off-by: Tyler Fanelli <[email protected]>

src/report.rs

@@ -30,22 +30,6 @@ pub fn create_random_request() -> [u8; 64] {
     data
 }
 
-// Write data into given file. Split it into 16 byte lines.
-pub fn write_hex<W: Write>(file: &mut BufWriter<W>, data: &[u8]) -> Result<()> {
-    let mut line_counter = 0;
-    for val in data {
-        // Make it blocks for easier read
-        if line_counter.eq(&16) {
-            writeln!(file).context("Failed to write data to file")?;
-            line_counter = 0;
-        }
-        // Write byte into file
-        write!(file, "{:02x}", val).context("Failed to write data to file")?;
-        line_counter += 1;
-    }
-    Ok(())
-}
-
 #[derive(StructOpt)]
 pub struct ReportArgs {
     #[structopt(help = "File to write the attestation report to.")]