test(snapshot): remove leftover debug println

The debug println was added during the bincode to bitcode migration
to inspect the serialized snapshot data length while troubleshooting
the test.

The test now validates the snapshot format version directly, and the
extra output is no longer useful. Remove it so the test stays quiet
and focused.

Signed-off-by: immanuwell <pchpr.00@list.ru>

Author: immanuwell

src/vmm/src/snapshot/mod.rs

@@ -251,9 +251,6 @@ mod tests {
         let mut snapshot_data = Vec::new();
         snapshot.save(&mut snapshot_data).unwrap();
 
-        // Debug: print the length to understand what's happening
-        println!("Snapshot data length: {}", snapshot_data.len());
-
         assert_eq!(
             get_format_version(&mut std::io::Cursor::new(&snapshot_data)).unwrap(),
             SNAPSHOT_VERSION