maint: remove unused include for signal.h

A number of files were including signal.h but not using any
of the functions it provides

Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>

1 files changed, 0 insertions, 1 deletions

diff --git a/os-win32.c b/os-win32.c
index c0daf8e..cc09196 100644
--- a/os-win32.c
+++ b/os-win32.c
@@ -26,7 +26,6 @@
 #include <mmsystem.h>
 #include <unistd.h>
 #include <fcntl.h>
-#include <signal.h>
 #include <time.h>
 #include <errno.h>
 #include <sys/time.h>