Create Files with Desired Permissions; Avoid chmod(); Remove UTIL_chmod()

programs/util.h

@@ -22,7 +22,7 @@ extern "C" {
 #include "platform.h"     /* PLATFORM_POSIX_VERSION, ZSTD_NANOSLEEP_SUPPORT, ZSTD_SETPRIORITY_SUPPORT */
 #include <stddef.h>       /* size_t, ptrdiff_t */
 #include <sys/types.h>    /* stat, utime */
-#include <sys/stat.h>     /* stat, chmod, umask */
+#include <sys/stat.h>     /* stat, chmod */
 #include "../lib/common/mem.h"          /* U64 */
 
 
@@ -153,11 +153,6 @@ U64 UTIL_getFileSizeStat(const stat_t* statbuf);
  */
 int UTIL_chmod(char const* filename, const stat_t* statbuf, mode_t permissions);
 
-/**
- * Wraps umask(). Does nothing when the platform doesn't have that concept.
- */
-int UTIL_umask(int mode);
-
 /*
  * In the absence of a pre-existing stat result on the file in question, these
  * functions will do a stat() call internally and then use that result to