remove official support for custom ssh port until FlashSystem supports it officially

Signed-off-by: Ariel Kass <arielk@il.ibm.com>

Author: Ariel Kass

docs/content/release_notes/changelog_1.12.3.md

@@ -8,7 +8,6 @@ As of this document's publication date, the IBM Power® and zLinux® architectur
 As of this document's publication date, NVMe/FC is not supported for this release.{: restriction}
 
 IBM® Block Storage CSI driver 1.12.3 added new support and enhancements.
-- Support custom ssh port when connecting to IBM Storage Virtualize family storage systems only
 - Improve PVC scalability (creation and mounting), specifically for large scale VM deployments
 - Security fixes and 3rd party dependency updates
 

docs/content/release_notes/whats_new.md

@@ -2,7 +2,6 @@
 
 IBM® block storage CSI driver 1.12.3 is a minor release that adds support for:
 
-- Support custom ssh port when connecting to IBM Storage Virtualize family storage systems only
 - Improve PVC scalability (creation and mounting), specifically for large scale VM deployments
 - Security fixes and 3rd party dependency updates