date: use the same code for FEATURE_DATE_NANO for glibc and uclibc

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

coreutils/date.c

@@ -204,11 +204,7 @@ int date_main(int argc UNUSED_PARAM, char **argv)
 		xstat(filename, &statbuf);
 		ts.tv_sec = statbuf.st_mtime;
 #if ENABLE_FEATURE_DATE_NANO
-# if defined __GLIBC__ && !defined __UCLIBC__
 		ts.tv_nsec = statbuf.st_mtim.tv_nsec;
-# else
-		ts.tv_nsec = statbuf.st_mtimensec;
-# endif
 #endif
 	} else {
 #if ENABLE_FEATURE_DATE_NANO