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-rw-r--r--src/process.c4
1 files changed, 0 insertions, 4 deletions
diff --git a/src/process.c b/src/process.c
index 210287a85f1..c8f329c244b 100644
--- a/src/process.c
+++ b/src/process.c
@@ -164,10 +164,6 @@ extern Lisp_Object QCfilter;
extern const char *get_operating_system_release (void);
-/* From sysdep.c or w32.c */
-extern int serial_open (char *port);
-extern void serial_configure (struct Lisp_Process *p, Lisp_Object contact);
-
#ifndef HAVE_H_ERRNO
extern int h_errno;
#endif