sysctl: fixup build system

Remove the external definition of the procio function.

Makefile.am

@@ -198,8 +198,7 @@ pwdx_LDADD= $(CYGWINFLAGS)
 sysctl_SOURCES = \
 	sysctl.c \
 	lib/fileutils.c \
-	procio.c \
-	procio.h
+	procio.c
 endif
 tload_SOURCES = tload.c lib/strutils.c lib/fileutils.c
 uptime_SOURCES = uptime.c lib/fileutils.c

proc/procio.h

@@ -1,11 +0,0 @@
-#ifndef PROCPS_PROC_PROCIO_H
-#define PROCPS_PROC_PROCIO_H
-
-#include "procps.h"
-
-EXTERN_C_BEGIN
-
-extern FILE *fprocopen(const char *, const char *);
-
-EXTERN_C_END
-#endif

sysctl.c

@@ -45,10 +45,11 @@
 #include "fileutils.h"
 #include "nls.h"
 #include "xalloc.h"
-#include "proc/procio.h"
 #include "proc/procps.h"
 #include "proc/version.h"
 
+extern FILE *fprocopen(const char *, const char *);
+
 /*
  *    Globals...
  */