connect: tidy error enum (#1712)

nym-connect/src-tauri/src/config/mod.rs

@@ -90,7 +90,7 @@ impl Config {
 
     pub fn config_file_location(id: &str) -> Result<PathBuf> {
         Socks5Config::try_default_config_file_path(Some(id))
-            .ok_or(BackendError::CouldNotGetFilename)
+            .ok_or(BackendError::CouldNotGetConfigFilename)
     }
 }
 

nym-connect/src-tauri/src/error.rs

@@ -36,12 +36,6 @@ pub enum BackendError {
         source: ClientCoreError,
     },
 
-    #[error("State error")]
-    StateError,
-    #[error("Could not connect")]
-    CouldNotConnect,
-    #[error("Could not disconnect")]
-    CouldNotDisconnect,
     #[error("Could not send disconnect signal to the SOCKS5 client")]
     CoundNotSendDisconnectSignal,
     #[error("No service provider set")]