fix(build): CI fixes from previous merges (#2579)

This PR fixes some CI issues that crept in from previous merges.

# Checklist:
Remove the checklist to signal you've completed it. Enable auto-merge if
the PR is ready to merge.
- [ ] If the pull request requires a cryptography review (e.g.
cryptographic algorithm implementations) I have added the 'crypto' tag.
- [ ] I have reviewed my diff in github, line by line and removed
unexpected formatting changes, testing logs, or commented-out code.
- [ ] Every change is related to the PR description.
- [ ] I have
[linked](https://docs.github.com/en/issues/tracking-your-work-with-issues/linking-a-pull-request-to-an-issue)
this pull request to relevant issues (if any exist).

yarn-project/sequencer-client/src/sequencer/sequencer.test.ts

@@ -70,6 +70,7 @@ describe('sequencer', () => {
 
     l1ToL2MessageSource = mock<L1ToL2MessageSource>({
       getPendingL1ToL2Messages: () => Promise.resolve(Array(NUMBER_OF_L1_L2_MESSAGES_PER_ROLLUP).fill(Fr.ZERO)),
+      getBlockNumber: () => Promise.resolve(lastBlockNumber),
     });
 
     sequencer = new TestSubject(

yarn-project/world-state/src/world-state-db/merkle_trees.ts

@@ -28,7 +28,7 @@ import {
   loadTree,
   newTree,
 } from '@aztec/merkle-tree';
-import { L2Block, MerkleTreeId, SiblingPath, merkleTreeIds } from '@aztec/types';
+import { L2Block, MerkleTreeId, SiblingPath } from '@aztec/types';
 
 import { default as levelup } from 'levelup';