diff --git a/compiler/mono/src/ir.rs b/compiler/mono/src/ir.rs
index 79628b27ac..9d4d41efd3 100644
--- a/compiler/mono/src/ir.rs
+++ b/compiler/mono/src/ir.rs
@@ -302,39 +302,6 @@ pub enum InProgressProc<'a> {
 }
 
 impl<'a> Procs<'a> {
-    /// Absorb the contents of another Procs into this one.
-    pub fn absorb(&mut self, mut other: Procs<'a>) {
-        debug_assert!(self.pending_specializations.is_some());
-        debug_assert!(other.pending_specializations.is_some());
-
-        match self.pending_specializations {
-            Some(ref mut pending_specializations) => {
-                for (k, v) in other.pending_specializations.unwrap().drain() {
-                    pending_specializations.insert(k, v);
-                }
-            }
-            None => {
-                unreachable!();
-            }
-        }
-
-        for (k, v) in other.partial_procs.drain() {
-            self.partial_procs.insert(k, v);
-        }
-
-        for (k, v) in other.specialized.drain() {
-            self.specialized.insert(k, v);
-        }
-
-        for (k, v) in other.runtime_errors.drain() {
-            self.runtime_errors.insert(k, v);
-        }
-
-        for symbol in other.module_thunks.drain() {
-            self.module_thunks.insert(symbol);
-        }
-    }
-
     pub fn get_specialized_procs_without_rc(
         self,
         arena: &'a Bump,