disable journal interface call-through

The pass-through isn't working as expected, therefore disable it.  This
patchset disables the call to the sd journal interface object and
instead calls sdbus directly as it had previously.

This will break any tests that pass through log<>, but that will be
revisited.

Change-Id: I59aa914d21405a2c5b9746d7d98958912078cc87
Signed-off-by: Patrick Venture <venture@google.com>
diff --git a/phosphor-logging/log.hpp b/phosphor-logging/log.hpp
index 673848c..24fa423 100644
--- a/phosphor-logging/log.hpp
+++ b/phosphor-logging/log.hpp
@@ -100,7 +100,9 @@
 void helper_log(T&& e, std::integer_sequence<size_t, I...>)
 {
     // https://www.freedesktop.org/software/systemd/man/sd_journal_print.html
-    sdjournal_ptr->journal_send(std::get<I>(std::forward<T>(e))..., NULL);
+    // TODO: Re-enable call through interface for testing (or move the code
+    // into the body of the object).
+    sd_journal_send(std::get<I>(std::forward<T>(e))..., NULL);
 }
 
 /** @fn details::log()