diff --git a/gax/test/system-test/test.clientlibs.ts b/gax/test/system-test/test.clientlibs.ts
index 3733903ca..fcc14e761 100644
--- a/gax/test/system-test/test.clientlibs.ts
+++ b/gax/test/system-test/test.clientlibs.ts
@@ -165,14 +165,6 @@ async function runSystemTest(
   return await runScript(packageName, inMonorepo, 'system-test');
 }
 
-// nodejs-kms does not have system test.
-async function runSamplesTest(
-  packageName: string,
-  inMonorepo: boolean
-): Promise<TestResult> {
-  return await runScript(packageName, inMonorepo, 'samples-test');
-}
-
 describe('Run system tests for some libraries', () => {
   before(async () => {
     console.log('Packing google-gax...');
@@ -218,21 +210,4 @@ describe('Run system tests for some libraries', () => {
       }
     });
   });
-
-  // KMS api has IAM service injected from gax. All its IAM related test are in samples-test.
-  // KMS is in the google-cloud-node monorepo
-  // Temporarily skipped to avoid circular dependency issue.
-  /*describe('kms', () => {
-    before(async () => {
-      await preparePackage('kms', true);
-    });
-    it('should pass samples tests', async function () {
-      const result = await runSamplesTest('kms', true);
-      if (result === TestResult.SKIP) {
-        this.skip();
-      } else if (result === TestResult.FAIL) {
-        throw new Error('Test failed');
-      }
-    });
-  });*/
 });
diff --git a/gax/test/test-application/src/index.ts b/gax/test/test-application/src/index.ts
index 501a77f17..8d13f8618 100644
--- a/gax/test/test-application/src/index.ts
+++ b/gax/test/test-application/src/index.ts
@@ -495,7 +495,7 @@ async function testServerStreamingRetryOptions(client: SequenceServiceClient) {
   );
 
   const response = await client.createStreamingSequence(request);
-  await new Promise<void>((resolve, _) => {
+  await new Promise<void>(resolve => {
     const sequence = response[0];
 
     const attemptRequest =
@@ -554,7 +554,7 @@ async function testServerStreamingRetrieswithRetryOptions(
   );
 
   const response = await client.createStreamingSequence(request);
-  await new Promise<void>((resolve, _) => {
+  await new Promise<void>(resolve => {
     const sequence = response[0];
 
     const attemptRequest =
@@ -617,7 +617,7 @@ async function testServerStreamingRetriesWithShouldRetryFn(
   );
 
   const response = await client.createStreamingSequence(request);
-  await new Promise<void>((resolve, _) => {
+  await new Promise<void>(resolve => {
     const sequence = response[0];
     const attemptRequest =
       new protos.google.showcase.v1beta1.AttemptStreamingSequenceRequest();
@@ -676,7 +676,7 @@ async function testServerStreamingRetrieswithRetryRequestOptions(
   );
 
   const response = await client.createStreamingSequence(request);
-  await new Promise<void>((resolve, _) => {
+  await new Promise<void>(resolve => {
     const sequence = response[0];
 
     const attemptRequest =
@@ -748,7 +748,7 @@ async function testServerStreamingRetrieswithRetryRequestOptionsResumptionStrate
     'This is testing the brand new and shiny StreamingSequence server 3'
   );
   const response = await client.createStreamingSequence(request);
-  await new Promise<void>((resolve, _) => {
+  await new Promise<void>(resolve => {
     const sequence = response[0];
 
     const attemptRequest =