Remove unused safe_create_wronly function

ccache.h

@@ -152,7 +152,6 @@ char *dirname(const char *path);
 const char *get_extension(const char *path);
 char *remove_extension(const char *path);
 size_t file_size(struct stat *st);
-int safe_create_wronly(const char *fname);
 char *format_human_readable_size(uint64_t size);
 char *format_parsable_size_with_suffix(uint64_t size);
 bool parse_size_with_suffix(const char *str, uint64_t *size);

util.c

@@ -1060,25 +1060,6 @@ file_size(struct stat *st)
 #endif
 }
 
-/*
- * Create a file for writing. Creates parent directories if they don't exist.
- */
-int
-safe_create_wronly(const char *fname)
-{
-	int fd = open(fname, O_WRONLY | O_CREAT | O_EXCL | O_BINARY, 0666);
-	if (fd == -1 && errno == ENOENT) {
-		/*
-		 * Only make sure parent directories exist when have failed to open the
-		 * file -- this saves stat() calls.
-		 */
-		if (create_parent_dirs(fname) == 0) {
-			fd = open(fname, O_RDWR | O_CREAT | O_EXCL | O_BINARY, 0666);
-		}
-	}
-	return fd;
-}
-
 /* Format a size as a human-readable string. Caller frees. */
 char *
 format_human_readable_size(uint64_t v)