Remove useless dependencies

Remove GHC dependencies:

    pretty

Remove [haskell-core] dependencies:

    MonadRandom
    asn1-encoding
    asn1-parse
    asn1-types
    byteable
    case-insensitive
    cipher-rc4
    cmdargs
    connection
    cookie
    crypto-cipher-types
    crypto-numbers
    crypto-pubkey
    digest
    haskeline
    json
    maccatcher
    mime-types
    publicsuffixlist
    regex-compat
    regex-posix
    securemem
    socks
    streaming-commons
    strict
    tls
    uuid
    wl-pprint-text
    x509
    x509-store
    x509-system
    x509-validation
    xml-conduit
    xml-types

Signed-off-by: Nicola Squartini <tensor5@gmail.com>
Update 2014-06-13

Update packages:

    threads

Update dependencies from [haskell-core]:

    HStringTemplate
    aeson
    conduit
    conduit-extra
    crypto-api
    entropy
    http-client
    http-client-tls
    http-conduit
    monad-logger
    syb
    uniplate

Signed-off-by: Nicola Squartini <tensor5@gmail.com>