Revert "crypto: xts - Add ECB dependency"

BugLink: http://bugs.launchpad.net/bugs/1744639

This reverts commit 6145171a.

The commit fixes a bug that was only introduced in 4.10, thus is
irrelevant for <=4.9.
Signed-off-by: Sasha Levin <alexander.levin@verizon.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Signed-off-by: Khalid Elmously <khalid.elmously@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>

crypto/Kconfig

@@ -343,7 +343,6 @@ config CRYPTO_XTS
 	select CRYPTO_BLKCIPHER
 	select CRYPTO_MANAGER
 	select CRYPTO_GF128MUL
-	select CRYPTO_ECB
 	help
 	  XTS: IEEE1619/D16 narrow block cipher use with aes-xts-plain,
 	  key size 256, 384 or 512 bits. This implementation currently