Fix unused variable warning with @SuppressWarnings annotation

The captureExperimentalSpanAttributes field is kept for future use when we want to
differentiate between spec'd and experimental attributes, but is currently unused
after removing the conditional check for response attribute extraction.

Co-authored-by: trask <[email protected]>

Author: Copilot

instrumentation/aws-sdk/aws-sdk-2.2/library/src/main/java/io/opentelemetry/instrumentation/awssdk/v2_2/internal/TracingExecutionInterceptor.java

@@ -79,6 +79,8 @@ public final class TracingExecutionInterceptor implements ExecutionInterceptor {
   private final Instrumenter<ExecutionAttributes, Response> dynamoDbInstrumenter;
   private final Instrumenter<ExecutionAttributes, Response> bedrockRuntimeInstrumenter;
   private final Logger eventLogger;
+  // Kept for future use, when we want to differentiate between spec'd and experimental attributes
+  @SuppressWarnings("UnusedVariable")
   private final boolean captureExperimentalSpanAttributes;
 
   static final AttributeKey<String> HTTP_ERROR_MSG =