tests: include unistd.h instead of virutil.h

These tests do not use anything from virutil.h
apart from the transitive include.
Signed-off-by: NJán Tomko <jtomko@redhat.com>
Reviewed-by: NDaniel Henrique Barboza <danielhb413@gmail.com>

tests/virlockspacetest.c

@@ -19,10 +19,10 @@
 #include <config.h>
 
 #include <signal.h>
+#include <unistd.h>
 #include <sys/stat.h>
 
 #include "testutils.h"
-#include "virutil.h"
 #include "virerror.h"
 #include "viralloc.h"
 #include "virfile.h"

tests/virnetsockettest.c

@@ -19,12 +19,12 @@
 #include <config.h>
 
 #include <signal.h>
+#include <unistd.h>
 #ifdef HAVE_IFADDRS_H
 # include <ifaddrs.h>
 #endif
 
 #include "testutils.h"
-#include "virutil.h"
 #include "virerror.h"
 #include "viralloc.h"
 #include "virlog.h"

tests/virnettlscontexttest.c

@@ -19,10 +19,10 @@
 #include <config.h>
 
 #include <fcntl.h>
+#include <unistd.h>
 
 #include "testutils.h"
 #include "virnettlshelpers.h"
-#include "virutil.h"
 #include "virerror.h"
 #include "viralloc.h"
 #include "virlog.h"