cleanup variants in TreeErrorKind

Signed-off-by: simonsan <[email protected]>

crates/core/src/blob/tree.rs

@@ -33,24 +33,12 @@ use crate::{
 #[derive(thiserror::Error, Debug, displaydoc::Display)]
 #[non_exhaustive]
 pub enum TreeErrorKind {
-    /// blob `{0}` not found in index
-    BlobIdNotFound(TreeId),
-    /// `{0:?}` is not a directory
-    NotADirectory(OsString),
-    /// Path `{0:?}` not found
-    PathNotFound(OsString),
     /// path should not contain current or parent dir
     ContainsCurrentOrParentDirectory,
     /// `serde_json` couldn't serialize the tree: `{0:?}`
     SerializingTreeFailed(serde_json::Error),
-    /// `serde_json` couldn't deserialize tree from bytes of JSON text: `{0:?}`
-    DeserializingTreeFailed(serde_json::Error),
     /// slice is not UTF-8: `{0:?}`
     PathIsNotUtf8Conform(Utf8Error),
-    /// error in building nodestreamer: `{0:?}`
-    BuildingNodeStreamerFailed(ignore::Error),
-    /// failed to read file string from glob file: `{0:?}`
-    ReadingFileStringFromGlobsFailed(std::io::Error),
     /// Error `{kind}` in tree streamer: `{source}`
     Channel {
         kind: &'static str,