coreos-modules: Remove duplicate CRYPTO_GCM config

Signed-off-by: Jeremi Piotrowski <jpiotrowski@microsoft.com>

Author: jepio

sdk_container/src/third_party/coreos-overlay/sys-kernel/coreos-modules/files/commonconfig-6.6

@@ -130,7 +130,6 @@ CONFIG_CRYPTO_CTS=m
 CONFIG_CRYPTO_DES=m
 CONFIG_CRYPTO_FIPS=y
 CONFIG_CRYPTO_GCM=m
-CONFIG_CRYPTO_GCM=m
 CONFIG_CRYPTO_GHASH=m
 CONFIG_CRYPTO_HMAC=y
 CONFIG_CRYPTO_LIB_AES=m