revert some gzip2 work in deflate.rs

zlib-rs/src/deflate.rs

@@ -2003,19 +2003,11 @@ pub fn deflate(stream: &mut DeflateStream, flush: Flush) -> ReturnCode {
 
     // TODO gzip
 
-    if stream.state.wrap == 2 {
-        todo!()
-    //        let crc_fold = std::mem::take(&mut stream.state.crc_fold);
-    //        stream.adler = crc32_fold_final(crc_fold);
-    //
-    //        let adler = stream.adler as u32;
-    //        stream.state.pending.extend(&adler.to_le_bytes());
-    //
-    //        let total_in = stream.total_in as u32;
-    //        stream.state.pending.extend(&total_in.to_le_bytes());
-    } else if stream.state.wrap == 1 {
-        let adler = stream.adler as u32;
-        stream.state.pending.extend(&adler.to_be_bytes());
+    {
+        if stream.state.wrap == 1 {
+            let adler = stream.adler as u32;
+            stream.state.pending.extend(&adler.to_be_bytes());
+        }
     }
 
     flush_pending(stream);