diff --git a/noir-projects/noir-protocol-circuits/crates/reset-kernel-lib/src/private_validation_request_processor.nr b/noir-projects/noir-protocol-circuits/crates/reset-kernel-lib/src/private_validation_request_processor.nr
index 7fc2e3929d71..8cfa430a8a01 100644
--- a/noir-projects/noir-protocol-circuits/crates/reset-kernel-lib/src/private_validation_request_processor.nr
+++ b/noir-projects/noir-protocol-circuits/crates/reset-kernel-lib/src/private_validation_request_processor.nr
@@ -5,8 +5,7 @@ use dep::types::{
     MAX_NEW_NOTE_HASHES_PER_TX, MAX_NEW_NULLIFIERS_PER_TX, MAX_NOTE_HASH_READ_REQUESTS_PER_TX,
     MAX_NULLIFIER_KEY_VALIDATION_REQUESTS_PER_TX, GENERATOR_INDEX__NSK_M
 },
-    grumpkin_private_key::GrumpkinPrivateKey, keys::compute_siloed_nullifier_secret_key,
-    hash::poseidon2_hash, traits::is_empty
+    grumpkin_private_key::GrumpkinPrivateKey, hash::poseidon2_hash, traits::is_empty
 };
 
 struct PrivateValidationRequestProcessor {
diff --git a/noir-projects/noir-protocol-circuits/crates/types/src/keys.nr b/noir-projects/noir-protocol-circuits/crates/types/src/keys.nr
deleted file mode 100644
index 0e93ffe78417..000000000000
--- a/noir-projects/noir-protocol-circuits/crates/types/src/keys.nr
+++ /dev/null
@@ -1,26 +0,0 @@
-use crate::{address::AztecAddress, grumpkin_private_key::GrumpkinPrivateKey, hash::pedersen_hash};
-
-fn field_to_grumpkin_private_key(val: Field) -> GrumpkinPrivateKey {
-    let bytes = val.to_be_bytes(32);
-    let mut v = 1;
-    let mut high = 0;
-    let mut low = 0;
-
-    for i in 0..16 {
-        high = high + (bytes[15 - i] as Field) * v;
-        low = low + (bytes[16 + 15 - i] as Field) * v;
-        v = v * 256;
-    }
-
-    GrumpkinPrivateKey { high, low }
-}
-
-pub fn compute_siloed_nullifier_secret_key(secret_key: GrumpkinPrivateKey, contract_address: AztecAddress) -> GrumpkinPrivateKey {
-    // TODO: Temporary hack. Should replace it with a secure way to derive the secret key.
-    // Match the way keys are derived in circuits.js/src/keys/index.ts
-    let hash = pedersen_hash(
-        [secret_key.high, secret_key.low, contract_address.to_field()],
-        0
-    );
-    field_to_grumpkin_private_key(hash)
-}
diff --git a/noir-projects/noir-protocol-circuits/crates/types/src/lib.nr b/noir-projects/noir-protocol-circuits/crates/types/src/lib.nr
index 5e7a03c0f962..5530e8313527 100644
--- a/noir-projects/noir-protocol-circuits/crates/types/src/lib.nr
+++ b/noir-projects/noir-protocol-circuits/crates/types/src/lib.nr
@@ -13,7 +13,6 @@ mod constants;
 mod contract_class_id;
 mod merkle_tree;
 mod contract_instance;
-mod keys;
 
 mod messaging;
 mod mocked;