Remove delta_q experimental flag.

Change-Id: I52f204000f5fdaf1c6fff63949d72e858ceea462
diff --git a/test/aq_segment_test.cc b/test/aq_segment_test.cc
index 026b002..57db0d0 100644
--- a/test/aq_segment_test.cc
+++ b/test/aq_segment_test.cc
@@ -90,7 +90,7 @@
 
 TEST_P(AqSegmentTestLarge, TestNoMisMatchAQ3) { DoTest(3); }
 
-#if CONFIG_DELTA_Q & !CONFIG_EXT_DELTA_Q
+#if !CONFIG_EXT_DELTA_Q
 // Validate that this AQ mode (AQ=4, delta q)
 // encodes and decodes without a mismatch.
 TEST_P(AqSegmentTest, TestNoMisMatchAQ4) {