2 files changed, 0 insertions, 8 deletions

diff --git a/src/s/irix6-5.h b/src/s/irix6-5.h
index 1750183189d..338c18cca52 100644
--- a/src/s/irix6-5.h
+++ b/src/s/irix6-5.h
@@ -24,6 +24,3 @@ char *_getpty();
 #endif
 
 #undef SA_RESTART     /* not the same as defining BROKEN_SA_RESTART */
-
-#undef TIOCSIGSEND              /* defined in usg5-4-common.h */
-
diff --git a/src/s/usg5-4-common.h b/src/s/usg5-4-common.h
index 12506bd8d08..05f22143460 100644
--- a/src/s/usg5-4-common.h
+++ b/src/s/usg5-4-common.h
@@ -42,8 +42,3 @@ along with GNU Emacs.  If not, see <http://www.gnu.org/licenses/>.  */
   waitpid ((pid_t) -1, (status), (options))
 #define WRETCODE(w) (w >> 8)
 
-/* TIOCGPGRP is broken in SysVr4, so we can't send signals to PTY
-   subprocesses the usual way.  But TIOCSIGNAL does work for PTYs, and
-   this is all we need.  */
-#define TIOCSIGSEND TIOCSIGNAL
-