vibrator: Change logging level in perform function

Change-Id: I8e381e905969e3f4d4c99400108d14259168b41f
diff --git a/aidl/vibrator/Vibrator.cpp b/aidl/vibrator/Vibrator.cpp
index 0b0aac9..57570f0 100644
--- a/aidl/vibrator/Vibrator.cpp
+++ b/aidl/vibrator/Vibrator.cpp
@@ -101,9 +101,9 @@
 
     if (callback != nullptr) {
         std::thread([=] {
-            LOG(INFO) << "Starting perform on another thread";
+            LOG(VERBOSE) << "Starting perform on another thread";
             usleep(timeoutMs * 1000);
-            LOG(INFO) << "Notifying perform complete";
+            LOG(VERBOSE) << "Notifying perform complete";
             callback->onComplete();
         }).detach();
     }