Revert "logd: liblog: whitelist "snet_event_log""

Callers will not guarantee that they can or will ratelimit, we need to
retain the ability to blacklist snet_event_log as a result.

This reverts commit 6aa21b225dd1600473388bd640443653d649420a.

Bug: 26178938
Change-Id: Ibf47d2e23a84c56f5f72d02312c698df7ff2b601
diff --git a/logd/Android.mk b/logd/Android.mk
index d19c255..feca8d5 100644
--- a/logd/Android.mk
+++ b/logd/Android.mk
@@ -38,9 +38,7 @@
 #  event_flag := $(call event_logtags,auditd)
 #  event_flag += $(call event_logtags,logd)
 # so make sure we do not regret hard-coding it as follows:
-event_flag := -DAUDITD_LOG_TAG=1003 \
-              -DLOGD_LOG_TAG=1004 \
-              -DSNET_EVENT_LOG_TAG=1397638484
+event_flag := -DAUDITD_LOG_TAG=1003 -DLOGD_LOG_TAG=1004
 
 LOCAL_CFLAGS := -Werror $(event_flag)