fix

Author: DrakeLin

kernel/src/actions/mod.rs

@@ -465,46 +465,6 @@ impl Protocol {
             .is_some_and(|features| features.contains(feature))
     }
 
-    /// Checks if a feature is supported in this protocol, accounting for both legacy protocols
-    /// (where features are implicit based on version) and modern protocols (where features must
-    /// be in the explicit feature lists).
-    pub(crate) fn is_feature_supported(&self, feature: &TableFeature) -> bool {
-        use crate::table_features::FeatureType;
-
-        let Some(info) = feature.info() else {
-            return false;
-        };
-
-        match info.feature_type {
-            FeatureType::Writer => {
-                if self.min_writer_version < 7 {
-                    // Legacy writer: check if version meets minimum requirement
-                    self.min_writer_version >= info.min_writer_version
-                } else {
-                    // Modern protocol: check explicit writer_features list
-                    self.has_table_feature(feature)
-                }
-            }
-            FeatureType::ReaderWriter => {
-                let reader_supported = if self.min_reader_version < 3 {
-                    self.min_reader_version >= info.min_reader_version
-                } else {
-                    self.reader_features()
-                        .is_some_and(|features| features.contains(feature))
-                };
-
-                let writer_supported = if self.min_writer_version < 7 {
-                    self.min_writer_version >= info.min_writer_version
-                } else {
-                    self.has_table_feature(feature)
-                };
-
-                reader_supported && writer_supported
-            }
-            FeatureType::Unknown => false,
-        }
-    }
-
     /// Validates the relationship between reader features and writer features in the protocol.
     pub(crate) fn validate_table_features(&self) -> DeltaResult<()> {
         // The protocol states that Reader features may be present if and only if the min_reader_version is 3