searcher: Remove the unused schema.

src/index.rs

@@ -268,7 +268,6 @@ impl Index {
     fn searcher(&self) -> Searcher {
         Searcher {
             inner: self.reader.searcher(),
-            schema: self.index.schema(),
         }
     }
 

src/searcher.rs

@@ -15,7 +15,6 @@ use tantivy::collector::{Count, MultiCollector, TopDocs};
 #[pyclass]
 pub(crate) struct Searcher {
     pub(crate) inner: tv::LeasedItem<tv::Searcher>,
-    pub(crate) schema: tv::schema::Schema,
 }
 
 #[pyclass]