diff --git a/adapterlib/src/lib.rs b/adapterlib/src/lib.rs
index dc9caf99..7de540a7 100644
--- a/adapterlib/src/lib.rs
+++ b/adapterlib/src/lib.rs
@@ -523,22 +523,6 @@ impl Response {
 /// All possible errors from the CI broker messages.
 #[derive(Debug, thiserror::Error)]
 pub enum AdapterLibError {
-    /// [`RequestBuilder`] does not have profile set.
-    #[error("RequestBuilder must have profile set")]
-    NoProfile,
-
-    /// [`RequestBuilder`] does not have event set.
-    #[error("RequestBuilder must have broker event set")]
-    NoEvent,
-
-    /// [`RequestBuilder`] does not have event handler set.
-    #[error("RequestBuilder has no event handler set")]
-    NoEventHandler,
-
-    /// CI event was not set for [`RequestBuilder`].
-    #[error("programming error: CI event was not set for request builder")]
-    CiEventNotSet,
-
     /// Request message lacks commits to run CI on.
     #[error("unacceptable request message: lacks Git commits to run CI on")]
     NoCommits,