Revert "liblog: resolve deadlocks"

This reverts commit 7a2a3071921b11d7e476862e7f9cbe72be43d0f7.

Bug: 25693940
Change-Id: I9a7c926289e972f80c03c92e33535e1dedaa7381
diff --git a/logd/LogBuffer.cpp b/logd/LogBuffer.cpp
index c2f71d1..fd5c066 100644
--- a/logd/LogBuffer.cpp
+++ b/logd/LogBuffer.cpp
@@ -191,9 +191,7 @@
         prio = *msg;
         tag = msg + 1;
     }
-    if (!__android_log_is_loggable(prio, tag,
-                                   ANDROID_LOG_VERBOSE |
-                                   ANDROID_LOGGABLE_FLAG_NOT_WITHIN_SIGNAL)) {
+    if (!__android_log_is_loggable(prio, tag, ANDROID_LOG_VERBOSE)) {
         // Log traffic received to total
         pthread_mutex_lock(&mLogElementsLock);
         stats.add(elem);