retire PUBLIC, PRIVATE and FORWARD

lib/libc/gen/minix/sysconf.c

@@ -19,7 +19,7 @@
 __weak_alias(sysconf, __sysconf)
 #endif
 
-PRIVATE u32_t get_hz(void)
+static u32_t get_hz(void)
 {
   FILE *fp;
   u32_t hz;
@@ -38,7 +38,7 @@ PRIVATE u32_t get_hz(void)
   return DEFAULT_HZ;
 }
 
-PUBLIC long int sysconf(name)
+long int sysconf(name)
 int name;			/* property being inspected */
 {
   switch(name) {

lib/libc/gen/minix/times.c

@@ -8,7 +8,7 @@
 __weak_alias(times, _times)
 #endif
 
-PUBLIC clock_t times(buf)
+clock_t times(buf)
 struct tms *buf;
 {
   message m;

lib/libc/gen/minix/utime.c

@@ -7,7 +7,7 @@
 #include <string.h>
 #include <utime.h>
 
-PUBLIC int utime(const char *name, const struct utimbuf *timp)
+int utime(const char *name, const struct utimbuf *timp)
 {
   message m;