Suppress OptionalOfRedundantMethod error

Errorprone is being updated from 2.7.1 -> 2.8.1, which
adds a OptionalOfRedundantMethod check, which has default
severity level ERROR.

Suppress it here as it's part of a test of Optional.

Bug: 190944875
Test: Patch aosp/1792988, then `m RUN_ERROR_PRONE=true javac-check`
Change-Id: I8a7152be0e2ac24eda5d377ef5cfef102487a5dc
diff --git a/test/993-breakpoints/src/art/Test993.java b/test/993-breakpoints/src/art/Test993.java
index 0c07298..c6e32e2 100644
--- a/test/993-breakpoints/src/art/Test993.java
+++ b/test/993-breakpoints/src/art/Test993.java
@@ -374,6 +374,7 @@
   // These test to make sure we are able to break on functions that might have been quickened or
   // inlined from the boot-image. These were all chosen for being in the bootclasspath, not being
   // long enough to prevent inlining, and not being used for the testing framework.
+  @SuppressWarnings("OptionalOfRedundantMethod")
   public static void runBCPMethodTests(boolean test_BCP_private) throws Exception {
     // The methods we will be breaking on.
     Method bcp_private_method =