diff --git a/google-cloud-spanner/pom.xml b/google-cloud-spanner/pom.xml
index ea9528bdff0..e5fe3e94824 100644
--- a/google-cloud-spanner/pom.xml
+++ b/google-cloud-spanner/pom.xml
@@ -438,20 +438,6 @@
test
-
-
- net.bytebuddy
- byte-buddy
- 1.18.4
- test
-
-
- net.bytebuddy
- byte-buddy-agent
- 1.18.4
- test
-
-
com.google.api.grpc
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractAsyncTransactionTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractAsyncTransactionTest.java
index e2ac7f4835e..0474a807d2b 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractAsyncTransactionTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractAsyncTransactionTest.java
@@ -16,7 +16,6 @@
package com.google.cloud.spanner;
-import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
import static com.google.cloud.spanner.MockSpannerTestUtil.EMPTY_KEY_VALUE_RESULTSET;
import static com.google.cloud.spanner.MockSpannerTestUtil.INVALID_UPDATE_STATEMENT;
import static com.google.cloud.spanner.MockSpannerTestUtil.READ_MULTIPLE_KEY_VALUE_RESULTSET;
@@ -56,7 +55,6 @@ public abstract class AbstractAsyncTransactionTest {
@BeforeClass
public static void setup() throws Exception {
- disableDefaultMtlsProvider();
mockSpanner = new MockSpannerServiceImpl();
mockSpanner.setAbortProbability(0.0D);
mockSpanner.putStatementResult(
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractMockServerTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractMockServerTest.java
index 15d308777e8..7857054bcb0 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractMockServerTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractMockServerTest.java
@@ -16,8 +16,6 @@
package com.google.cloud.spanner;
-import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
-
import com.google.api.gax.grpc.testing.LocalChannelProvider;
import com.google.cloud.NoCredentials;
import com.google.cloud.spanner.admin.database.v1.MockDatabaseAdminImpl;
@@ -51,7 +49,6 @@ abstract class AbstractMockServerTest {
@BeforeClass
public static void startMockServer() throws Exception {
- disableDefaultMtlsProvider();
mockSpanner = new MockSpannerServiceImpl();
mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
mockInstanceAdmin = new MockInstanceAdminImpl();
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractNettyMockServerTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractNettyMockServerTest.java
index e51c842fee4..a5d3b62d98d 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractNettyMockServerTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/AbstractNettyMockServerTest.java
@@ -16,8 +16,6 @@
package com.google.cloud.spanner;
-import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
-
import com.google.api.gax.grpc.testing.LocalChannelProvider;
import com.google.cloud.NoCredentials;
import io.grpc.ForwardingServerCall;
@@ -54,7 +52,6 @@ abstract class AbstractNettyMockServerTest {
@BeforeClass
public static void startMockServer() throws Exception {
- disableDefaultMtlsProvider();
mockSpanner = new MockSpannerServiceImpl();
mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/BatchCreateSessionsSlowTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/BatchCreateSessionsSlowTest.java
index 2807523f40b..38dcaa91d19 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/BatchCreateSessionsSlowTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/BatchCreateSessionsSlowTest.java
@@ -15,7 +15,6 @@
*/
package com.google.cloud.spanner;
-import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
import static com.google.cloud.spanner.MockSpannerTestUtil.READ_ONE_KEY_VALUE_RESULTSET;
import static com.google.cloud.spanner.MockSpannerTestUtil.READ_ONE_KEY_VALUE_STATEMENT;
import static com.google.cloud.spanner.MockSpannerTestUtil.SELECT1;
@@ -60,7 +59,6 @@ public class BatchCreateSessionsSlowTest {
@BeforeClass
public static void startStaticServer() throws Exception {
- disableDefaultMtlsProvider();
mockSpanner = new MockSpannerServiceImpl();
mockSpanner.setAbortProbability(0.0D); // We don't want any unpredictable aborted transactions.
mockSpanner.putStatementResult(
diff --git a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/ChannelUsageTest.java b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/ChannelUsageTest.java
index 9af7b595121..182c9cc35b5 100644
--- a/google-cloud-spanner/src/test/java/com/google/cloud/spanner/ChannelUsageTest.java
+++ b/google-cloud-spanner/src/test/java/com/google/cloud/spanner/ChannelUsageTest.java
@@ -16,7 +16,6 @@
package com.google.cloud.spanner;
-import static com.google.cloud.spanner.DisableDefaultMtlsProvider.disableDefaultMtlsProvider;
import static java.util.stream.Collectors.toSet;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;
@@ -106,7 +105,6 @@ public static Collection