refactor(canonical_addresses): drop unused AUTH_REGISTRY_CLASS_ID Noir export

Nothing on the Noir side references AUTH_REGISTRY_CLASS_ID — class ids are
consumed by contract-instance construction (TS) and class registration
(kernels), never from inside contract code. The TS twin in address.gen.ts
still exports it for instance construction and the runtime artifact-vs-stamp
consistency check; the stamp's lib.lock.json still records classId for the
freshness gate.

Author: dbanks12

noir-projects/aztec-nr/canonical_addresses/src/lib.nr

@@ -11,5 +11,6 @@
 
 use protocol_types::{address::AztecAddress, traits::FromField};
 
-pub global AUTH_REGISTRY_ADDRESS: AztecAddress = AztecAddress::from_field(0x27225abf9a79bc1c9279c82591f5e19d0b861cffcff33ac21d9f89ce14004ff1);
-pub global AUTH_REGISTRY_CLASS_ID: Field = 0x12e672a384cda5e1a03f18c901f40e01ec859355b56ca9f21a4cd0b2e99d3689;
+pub global AUTH_REGISTRY_ADDRESS: AztecAddress = AztecAddress::from_field(
+    0x27225abf9a79bc1c9279c82591f5e19d0b861cffcff33ac21d9f89ce14004ff1,
+);

yarn-project/protocol-contracts/src/auth-registry/derive_auth_registry.test.ts

@@ -40,12 +40,11 @@ describe('derive_auth_registry renderers', () => {
     expect(renderTsTwin(stamp)).toEqual(renderTsTwin(stamp));
   });
 
-  it('embeds the stamped address and class id in the Noir lib', () => {
+  it('embeds the stamped address in the Noir lib', () => {
     const lib = renderNoirLib(stamp);
     expect(lib).toContain(stamp.address.toField().toString());
-    expect(lib).toContain(stamp.classId.toString());
     expect(lib).toContain('AUTH_REGISTRY_ADDRESS');
-    expect(lib).toContain('AUTH_REGISTRY_CLASS_ID');
+    expect(lib).not.toContain('AUTH_REGISTRY_CLASS_ID');
   });
 
   it('embeds srcContentHash in the lock JSON for the freshness gate', () => {
@@ -57,7 +56,9 @@ describe('derive_auth_registry renderers', () => {
 
   it('TS twin parses as expected exports', () => {
     const ts = renderTsTwin(stamp);
-    expect(ts).toContain(`AUTH_REGISTRY_ADDRESS: AztecAddress = AztecAddress.fromString('${stamp.address.toString()}')`);
+    expect(ts).toContain(
+      `AUTH_REGISTRY_ADDRESS: AztecAddress = AztecAddress.fromString('${stamp.address.toString()}')`,
+    );
     expect(ts).toContain(`AUTH_REGISTRY_CLASS_ID: Fr = Fr.fromString('${stamp.classId.toString()}')`);
   });
 });

yarn-project/protocol-contracts/src/auth-registry/derive_auth_registry.ts

@@ -90,7 +90,6 @@ export function renderNoirLib(stamp: AuthRegistryStamp): string {
 use protocol_types::{address::AztecAddress, traits::FromField};
 
 pub global AUTH_REGISTRY_ADDRESS: AztecAddress = AztecAddress::from_field(${stamp.address.toField().toString()});
-pub global AUTH_REGISTRY_CLASS_ID: Field = ${stamp.classId.toString()};
 `;
 }