Remove ANDROID_LOG_RDONLY, etc

These macros haven't been meaningful in years.

Test: logging unit tests
Change-Id: I796ec6d9b450f8a84bc85c3f15ddd988724c5e08
diff --git a/debuggerd/libdebuggerd/tombstone.cpp b/debuggerd/libdebuggerd/tombstone.cpp
index b3f059c..bb3c260 100644
--- a/debuggerd/libdebuggerd/tombstone.cpp
+++ b/debuggerd/libdebuggerd/tombstone.cpp
@@ -457,8 +457,8 @@
     return;
   }
 
-  logger_list = android_logger_list_open(
-      android_name_to_log_id(filename), ANDROID_LOG_RDONLY | ANDROID_LOG_NONBLOCK, tail, pid);
+  logger_list =
+      android_logger_list_open(android_name_to_log_id(filename), ANDROID_LOG_NONBLOCK, tail, pid);
 
   if (!logger_list) {
     ALOGE("Unable to open %s: %s\n", filename, strerror(errno));