Yet more "#if 0" content removed.

e2fsprogs/mke2fs.c

@@ -828,9 +828,6 @@ static int PRS(int argc, char *argv[])
 	param.s_rev_level = 1;  /* Create revision 1 filesystems now */
 	param.s_feature_incompat |= EXT2_FEATURE_INCOMPAT_FILETYPE;
 	param.s_feature_ro_compat |= EXT2_FEATURE_RO_COMPAT_SPARSE_SUPER;
-#if 0
-	param.s_feature_compat |= EXT2_FEATURE_COMPAT_DIR_INDEX;
-#endif
 
 #ifdef __linux__
 	linux_version_code = get_linux_version_code();