libgui: use flag MACRO for BQ_SETFRAMERATE

Bug: 281695725
Test: presubmit
Change-Id: I644dadbfc72cd50d80c50d36da96078253bbc009
diff --git a/libs/gui/tests/BufferQueue_test.cpp b/libs/gui/tests/BufferQueue_test.cpp
index 17aa5f1..1410c7d 100644
--- a/libs/gui/tests/BufferQueue_test.cpp
+++ b/libs/gui/tests/BufferQueue_test.cpp
@@ -1266,9 +1266,7 @@
 }
 
 TEST_F(BufferQueueTest, TestBqSetFrameRateFlagBuildTimeIsSet) {
-    if (flags::bq_setframerate()) {
-        ASSERT_EQ(true, FLAG_BQ_SET_FRAME_RATE);
-    }
+    ASSERT_EQ(flags::bq_setframerate(), COM_ANDROID_GRAPHICS_LIBGUI_FLAGS(BQ_SETFRAMERATE));
 }
 
 struct BufferItemConsumerSetFrameRateListener : public BufferItemConsumer {