audioflinger: remove debug log.

Remove debug log left by commit ab5cdbaf.

bug: 17537746.
Change-Id: I10f672f607f8e87caaa8228fc05eff8aee7dfa15
diff --git a/services/audioflinger/Threads.cpp b/services/audioflinger/Threads.cpp
index 3d17c89..818bb05 100644
--- a/services/audioflinger/Threads.cpp
+++ b/services/audioflinger/Threads.cpp
@@ -3991,8 +3991,6 @@
             minFrames = 1;
         }
 
-        ALOGI("prepareTracks_l minFrames %d state %d frames ready %d, ",
-              minFrames, track->mState, track->framesReady());
         if ((track->framesReady() >= minFrames) && track->isReady() && !track->isPaused() &&
                 !track->isStopping_2() && !track->isStopped())
         {