[libsoup/hsts] Remove unneeded includes

[Claudio Saavedra <csaavedra src gnome org>]

commit 396e8718821e0a63d48e334cdb615581af446342
Author: Claudio Saavedra <csaavedra igalia com>
Date:   Wed Sep 26 15:42:29 2018 +0300

    Remove unneeded includes

 libsoup/soup-hsts-enforcer.c | 4 ----
 1 file changed, 4 deletions(-)
---
diff --git a/libsoup/soup-hsts-enforcer.c b/libsoup/soup-hsts-enforcer.c
index b00628a4..adf5d70f 100644
--- a/libsoup/soup-hsts-enforcer.c
+++ b/libsoup/soup-hsts-enforcer.c
@@ -12,10 +12,6 @@
 #include <config.h>
 #endif
 
-#include <errno.h>
-#include <stdio.h>
-#include <string.h>
-
 #include "soup-hsts-enforcer.h"
 #include "soup.h"