refactor(config): Remove unused error types

src/config.rs

@@ -15,20 +15,6 @@ use crate::str::to_train_case;
 
 #[derive(Error, Debug)]
 pub enum ConfigError {
-    /// The configuration file could not be found or read.
-    #[error("Could not open config from {}: {source:?}", path.display())]
-    OpenConfig {
-        path: PathBuf,
-        #[source]
-        source: std::io::Error,
-    },
-    /// The configuration file could not be parsed or deserialized.
-    #[error("Could not deserialize config from {}: {source:?}", path.display())]
-    DeserializeConfig {
-        path: PathBuf,
-        #[source]
-        source: toml::de::Error,
-    },
     /// The current directory could not be determined.
     #[error("Unable to determine the current directory.")]
     GetCurrentDir {