can remove this part

Author: rambleraptor

crates/iceberg/src/spec/manifest/_serde.rs

@@ -99,7 +99,7 @@ impl ManifestEntryV1 {
 #[serde_as]
 #[derive(Serialize, Deserialize)]
 pub(super) struct DataFileSerde {
-    #[serde(default = "default_to_zero")]
+    #[serde(default)]
     content: i32,
     file_path: String,
     file_format: String,
@@ -125,10 +125,6 @@ pub(super) struct DataFileSerde {
     content_size_in_bytes: Option<i64>,
 }
 
-fn default_to_zero() -> i32 {
-    0
-}
-
 impl DataFileSerde {
     pub fn try_from(
         value: super::DataFile,