removing the 255 fields limit

src/schema/schema.rs

@@ -100,9 +100,6 @@ impl SchemaBuilder {
     /// Finalize the creation of a `Schema`
     /// This will consume your `SchemaBuilder`
     pub fn build(self,) -> Schema {
-        if self.fields.len() > MAX_NUM_FIELDS {
-            panic!("There may be at most 255 fields.");
-        }
         Schema(Arc::new(InnerSchema {
             fields: self.fields,
             fields_map: self.fields_map,