[IPP] [UNKN] Issue #20: Drop cipher suite requirements

[msweet at apple.com]

[Issue Unconfirmed]

The TLS requirements in section 10 incorrectly specify required cipher
suites. The TLS specs already do this satisfactorily and handle
deprecation/obsoletion of insecure suites such as those in section 10.

Link: http://www.pwg.org/issues/20