sig_handlers: removed unused functions

Most of these functions were obsoleted when we switched to threaded
MPD.

src/sig_handlers.c

@@ -81,53 +81,3 @@ void initSigHandlers(void)
 	signal_handle(SIGTERM);
 	signal_handle(SIGHUP);
 }
-
-void finishSigHandlers(void)
-{
-	signal_unhandle(SIGINT);
-	signal_unhandle(SIGUSR1);
-	signal_unhandle(SIGTERM);
-	signal_unhandle(SIGHUP);
-}
-
-void ignoreSignals(void)
-{
-	struct sigaction sa;
-
-	sa.sa_flags = 0;
-	sigemptyset(&sa.sa_mask);
-	sa.sa_handler = SIG_IGN;
-	sa.sa_sigaction = NULL;
-	while (sigaction(SIGPIPE, &sa, NULL) < 0 && errno == EINTR) ;
-	while (sigaction(SIGCHLD, &sa, NULL) < 0 && errno == EINTR) ;
-	while (sigaction(SIGUSR1, &sa, NULL) < 0 && errno == EINTR) ;
-	while (sigaction(SIGINT, &sa, NULL) < 0 && errno == EINTR) ;
-	while (sigaction(SIGTERM, &sa, NULL) < 0 && errno == EINTR) ;
-	while (sigaction(SIGHUP, &sa, NULL) < 0 && errno == EINTR) ;
-}
-
-void blockSignals(void)
-{
-	sigset_t sset;
-
-	sigemptyset(&sset);
-	sigaddset(&sset, SIGCHLD);
-	sigaddset(&sset, SIGUSR1);
-	sigaddset(&sset, SIGHUP);
-	sigaddset(&sset, SIGINT);
-	sigaddset(&sset, SIGTERM);
-	while (sigprocmask(SIG_BLOCK, &sset, NULL) < 0 && errno == EINTR) ;
-}
-
-void unblockSignals(void)
-{
-	sigset_t sset;
-
-	sigemptyset(&sset);
-	sigaddset(&sset, SIGCHLD);
-	sigaddset(&sset, SIGUSR1);
-	sigaddset(&sset, SIGHUP);
-	sigaddset(&sset, SIGINT);
-	sigaddset(&sset, SIGTERM);
-	while (sigprocmask(SIG_UNBLOCK, &sset, NULL) < 0 && errno == EINTR) ;
-}