message: Remove default empty string function
diff: @@ -15,17 +15,13 @@ use serde::{Deserialize, Serialize};
  use crate::terminal::emoji;
  use crate::terminal::message;
  -fn empty_string() -> String {
  - "".to_string()
  -}
  -
  fn some_string() -> Option<String> {
  Some("".to_string())
  }
  #[derive(Clone, Debug, Default, Deserialize, Serialize)]
  pub struct Manifest {
  - #[serde(default = "empty_string")]
  + #[serde(default)]
  pub name: String,
  #[serde(rename = "type")]
  pub target_type: TargetType,
  