Removed dev-deps to serde_yaml

Cargo.toml

@@ -58,7 +58,6 @@ rand = "0.7"
 maplit = "1"
 matches = "0.1.8"
 proptest = "0.10"
-serde_yaml = "0.8.13"
 
 [dev-dependencies.fail]
 version = "0.4"

src/schema/field_entry.rs

@@ -309,17 +309,4 @@ mod tests {
             _ => panic!("expected FieldType::Str"),
         }
     }
-    #[test]
-    fn test_yaml_deserialization() {
-        let schema_content = r#"
-name: text
-type: text
-options:
-  indexing:
-    record: position
-    tokenizer: default
-  stored: true
-"#;
-        serde_yaml::from_str::<FieldEntry>(schema_content).unwrap();
-    }
 }