Remove Ubuntu 22.04 Jammy from list of Debian-based target platforms (#5303)

Signed-off-by: Christophe Bedard <bedard.christophe@gmail.com>

Author: christophebedard

source/Installation/Alternatives/Ubuntu-Development-Setup.rst

@@ -16,7 +16,6 @@ System requirements
 The current Debian-based target platforms for {DISTRO_TITLE_FULL} are:
 
 - Tier 1: Ubuntu Linux - Noble (24.04) 64-bit
-- Tier 3: Ubuntu Linux - Jammy (22.04) 64-bit
 - Tier 3: Debian Linux - Bookworm (12) 64-bit
 
 As defined in `REP 2000 <https://www.ros.org/reps/rep-2000.html>`_.