[gold patch ob] PR gold/17971: Remove redundant include

[Cary Coutant]

I've committed the following obvious patch...

-cary

2015-02-16  Cary Coutant  <ccoutant@google.com>

        PR gold/17971
        * incremental.cc: Remove redundant include of "output.h".


diff --git a/gold/incremental.cc b/gold/incremental.cc
index 7bcc570..b4fff11 100644
--- a/gold/incremental.cc
+++ b/gold/incremental.cc
@@ -33,7 +33,6 @@
 #include "incremental.h"
 #include "archive.h"
 #include "object.h"
-#include "output.h"
 #include "target-select.h"
 #include "target.h"
 #include "fileread.h"