fix: remove unused IntoEnumIterator import

Co-authored-by: aider (openai/andrew.openrouter.qwen.qwen3-coder) <aider@aider.chat>

src/meta_plugin.rs

@@ -13,8 +13,6 @@ pub mod digest;
 use crate::meta_plugin::program::MetaPluginProgram;
 use crate::meta_plugin::digest::{DigestSha256MetaPlugin, ReadTimeMetaPlugin, ReadRateMetaPlugin};
 
-use strum::IntoEnumIterator;
-
 #[derive(Debug, Eq, PartialEq, Clone, strum::EnumIter, strum::Display, strum::EnumString, Enum)]
 #[strum(ascii_case_insensitive)]
 pub enum MetaPluginType {