cleanup headers and especially #includes everywhere

Beside being a bit cleaner it hopefully also resolves oddball problems
I have with high levels of parallel jobs.

Git-Dch: Ignore
Reported-By: iwyu (include-what-you-use)

1 files changed, 1 insertions, 4 deletions

diff --git a/apt-private/private-output.h b/apt-private/private-output.h
index 2a2a69458..81643f90a 100644
--- a/apt-private/private-output.h
+++ b/apt-private/private-output.h
@@ -1,17 +1,14 @@
 #ifndef APT_PRIVATE_OUTPUT_H
 #define APT_PRIVATE_OUTPUT_H
 
+#include <apt-pkg/pkgcache.h>
 
-#include <iostream>
 #include <fstream>
 #include <string>
 
-#include "private-cachefile.h"
-
 // forward declaration
 class pkgCacheFile;
 class CacheFile;
-class pkgCache;
 class pkgDepCache;
 class pkgRecords;