fs/: Remove obsolete references to CONFIG_COMMANDS

fs/cramfs/cramfs.c

fs/cramfs/uncompress.c

fs/ext2/dev.c

fs/ext2/ext2fs.c

fs/fat/fat.c

fs/fat/file.c

fs/fdos/dev.c

fs/fdos/fat.c

fs/fdos/fdos.c

fs/fdos/fs.c

fs/fdos/subdir.c

fs/fdos/vfat.c

fs/jffs2/compr_lzari.c

fs/jffs2/compr_lzo.c

fs/jffs2/compr_rtime.c

fs/jffs2/compr_rubin.c

fs/jffs2/compr_zlib.c

fs/jffs2/jffs2_1pass.c

fs/jffs2/jffs2_nand_1pass.c

fs/jffs2/mini_inflate.c