Suppress a suggestion that we use the Duration overload.

(followup to cl/687302660)

RELNOTES=n/a
PiperOrigin-RevId: 687317647

Author: cpovirk

android/guava-testlib/test/com/google/common/testing/FakeTickerTest.java

@@ -37,6 +37,8 @@
  * @author Jige Yu
  */
 @GwtCompatible(emulated = true)
+// We also want to test the TimeUnit overload (especially under GWT, where it's the only option).
+@SuppressWarnings("SetAutoIncrementStep_Nanos")
 public class FakeTickerTest extends TestCase {
 
   @GwtIncompatible // NullPointerTester

guava-testlib/test/com/google/common/testing/FakeTickerTest.java

@@ -37,6 +37,8 @@
  * @author Jige Yu
  */
 @GwtCompatible(emulated = true)
+// We also want to test the TimeUnit overload (especially under GWT, where it's the only option).
+@SuppressWarnings("SetAutoIncrementStep_Nanos")
 public class FakeTickerTest extends TestCase {
 
   @GwtIncompatible // NullPointerTester