chore: remove unused error variants (#681)

Author: xeniape

rust/operator-binary/src/airflow_controller.rs

@@ -34,7 +34,6 @@ use stackable_operator::{
         product_image_selection::{self, ResolvedProductImage},
         rbac::build_rbac_resources,
     },
-    config::fragment::ValidationError,
     crd::{
         authentication::{core as auth_core, ldap},
         git_sync, listener,
@@ -122,9 +121,6 @@ pub struct Ctx {
 #[derive(Snafu, Debug, EnumDiscriminants)]
 #[strum_discriminants(derive(IntoStaticStr))]
 pub enum Error {
-    #[snafu(display("object has no namespace"))]
-    ObjectHasNoNamespace,
-
     #[snafu(display("object defines no airflow config role"))]
     NoAirflowRole,
 
@@ -217,11 +213,6 @@ pub enum Error {
         role: String,
     },
 
-    #[snafu(display("invalid executor name"))]
-    UnidentifiedAirflowExecutor {
-        source: stackable_operator::builder::meta::Error,
-    },
-
     #[snafu(display("invalid container name"))]
     InvalidContainerName {
         source: stackable_operator::builder::pod::container::Error,
@@ -270,9 +261,6 @@ pub enum Error {
         source: stackable_operator::cluster_resources::Error,
     },
 
-    #[snafu(display("fragment validation failure"))]
-    FragmentValidationFailure { source: ValidationError },
-
     #[snafu(display("failed to create PodDisruptionBudget"))]
     FailedToCreatePdb {
         source: crate::operations::pdb::Error,

rust/operator-binary/src/product_logging.rs

@@ -17,8 +17,6 @@ use crate::crd::STACKABLE_LOG_DIR;
 
 #[derive(Snafu, Debug)]
 pub enum Error {
-    #[snafu(display("object has no namespace"))]
-    ObjectHasNoNamespace,
     #[snafu(display("failed to retrieve the ConfigMap [{cm_name}]"))]
     ConfigMapNotFound {
         source: stackable_operator::client::Error,