Remove explicit SSLSocket.startHandshake

    When dalvik-dev merges to master, startHandshake will imply that
    the caller wants a fully synchronous handshake instead of using
    handshake cutthrough. This removes an unnecessary startHandshake
    from the CertificateChainValidator.

    	core/java/android/net/http/CertificateChainValidator.java

Change-Id: Ie28abd961a06b28fa780d62b0063371ef4dc1eec