CP-7579: Remove the DVSC deprecated warning messages on XenCenter for XS 6.5

This code change is to remove the DVSC deprecated warning messages on XenCenter for XS 6.5. The code change contain two parts:
1. Remove deprecate banner in Network Wizard.
2. Remove warning information in "Cross-Server Private Network" in both EN, JP and SC version.

Signed-off-by: Cheng Zhang <cheng.zhang@citrix.com>