dpkg-deb: Do not include unneeded <zlib.h>

The zlib functionality is already abstracted throught the libdpkg
compress module.

dpkg-deb/build.c

@@ -37,9 +37,6 @@
 #include <stdbool.h>
 #include <stdlib.h>
 #include <stdio.h>
-#ifdef WITH_ZLIB
-#include <zlib.h>
-#endif
 
 #include <dpkg/i18n.h>
 #include <dpkg/dpkg.h>

dpkg-deb/extract.c

@@ -35,9 +35,6 @@
 #include <ar.h>
 #include <stdlib.h>
 #include <stdio.h>
-#ifdef WITH_ZLIB
-#include <zlib.h>
-#endif
 
 #include <dpkg/i18n.h>
 #include <dpkg/dpkg.h>