diff --git a/crates/environ/src/trap_encoding.rs b/crates/environ/src/trap_encoding.rs
index 3c8fb354d8ae..b9ca1f17938d 100644
--- a/crates/environ/src/trap_encoding.rs
+++ b/crates/environ/src/trap_encoding.rs
@@ -99,10 +99,6 @@ pub enum Trap {
     /// Attempt to resume a continuation twice.
     ContinuationAlreadyConsumed,
 
-    /// FIXME(frank-emrich) Only used for stack switching debugging code, to be
-    /// removed from final upstreamed code.
-    DeleteMeDebugAssertion,
-
     /// A Pulley opcode was executed at runtime when the opcode was disabled at
     /// compile time.
     DisabledOpcode,
@@ -145,7 +141,6 @@ impl Trap {
             NoAsyncResult
             UnhandledTag
             ContinuationAlreadyConsumed
-            DeleteMeDebugAssertion
             DisabledOpcode
         }
 
@@ -180,7 +175,6 @@ impl fmt::Display for Trap {
             NoAsyncResult => "async-lifted export failed to produce a result",
             UnhandledTag => "unhandled tag",
             ContinuationAlreadyConsumed => "continuation already consumed",
-            DeleteMeDebugAssertion => "triggered debug assertion",
             DisabledOpcode => "pulley opcode disabled at compile time was executed",
         };
         write!(f, "wasm trap: {desc}")