chore: removing unused code

src/http/errors/admin_errors.rs

···
-use thiserror::Error;
 
-/// These errors relate to the process of importing RSVP data into the system
-/// by administrators, typically during data migration or recovery.
-#[derive(Debug, Error)]
-pub(crate) enum AdminImportRsvpError {
-    /// Error when an RSVP cannot be inserted during import.
-    ///
-    /// This error occurs when attempting to insert an imported RSVP into
-    /// the database fails, typically due to data validation issues or
-    /// database constraints.
-    #[error("error-admin-import-rsvp-1 Failed to insert RSVP: {0}")]
-    InsertFailed(String),
-}

src/http/errors/common_error.rs

···
     #[error("error-common-2 Not authorized to perform this action")]
     NotAuthorized,
 
-    /// Error when an unsupported event type is encountered.
-    ///
-    /// This error occurs when an operation is attempted on an event type
-    /// that is not supported by the current functionality.
-    #[error("error-common-3 Unsupported event type")]
-    UnsupportedEventType,
-
     /// Error when a required field is missing.
     ///
     /// This error occurs when a form or request is missing a mandatory field
     /// that is needed to complete the operation.
     #[error("error-common-4 Required field not provided")]
     FieldRequired,
-
-    /// Error when an AT Protocol URI has an invalid format.
-    ///
-    /// This error occurs when an AT Protocol URI is malformed or
-    /// doesn't follow the expected format specification.
-    #[error("error-common-6 Invalid AT-URI format")]
-    InvalidAtUri,
-
-    /// Error when a requested record cannot be found.
-    ///
-    /// This error occurs when an operation is attempted on a record
-    /// that doesn't exist in the database.
-    #[error("error-common-7 Record not found")]
-    RecordNotFound,
-
-    /// Error when record data cannot be parsed.
-    ///
-    /// This error occurs when a record's data cannot be properly
-    /// deserialized or parsed into the expected structure.
-    #[error("error-common-8 Failed to parse record data")]
-    FailedToParse,
 
     /// Error when event data has an invalid format or is corrupted.
     ///

src/http/errors/mod.rs

···
 pub mod view_event_error;
 pub mod web_error;
 
-pub(crate) use admin_errors::AdminImportRsvpError;
 pub(crate) use common_error::CommonError;
 pub(crate) use create_event_errors::CreateEventError;
 pub(crate) use edit_event_error::EditEventError;

src/http/errors/web_error.rs

···
 use axum::response::Response;
 use thiserror::Error;
 
-use super::admin_errors::AdminImportRsvpError;
 use super::common_error::CommonError;
 use super::create_event_errors::CreateEventError;
 use super::edit_event_error::EditEventError;
···
     /// different formats or systems.
     #[error(transparent)]
     MigrateRsvp(#[from] MigrateRsvpError),
-
-    /// Admin RSVP import errors.
-    ///
-    /// This error occurs when administrators have issues importing RSVP
-    /// records into the system.
-    #[error(transparent)]
-    AdminImportRsvp(#[from] AdminImportRsvpError),
 
     /// Cache operation errors.
     ///