Removed Qt5 support

[ahcorde]

Removed Qt5 support

Claude Opus 4.8

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[ahcorde]

Pulls: ros-visualization/rqt_plot#131, ros-visualization/rqt_topic#73, ros-visualization/rqt#368, ros-visualization/rqt_bag#215, ros-visualization/rqt_console#61, ros-visualization/rqt_graph#123, ros-visualization/rqt_msg#35, ros-visualization/rqt_publisher#61, ros-visualization/rqt_shell#34, #165, ros-visualization/qt_gui_core#345
Gist: https://gist.githubusercontent.com/ahcorde/f280a493ef72a72751fbf275688f41c1/raw/97d11862d4ef8880e954cb301401fcd8cc3c63dd/ros2.repos
BUILD args: --packages-above-and-dependencies qt_gui qt_gui_cpp python_qt_binding rqt_plot rqt_topic rqt_gui_cpp rqt_bag rqt_console rqt_graph rqt_msg rqt_publisher rqt_shell
TEST args: --packages-above qt_gui qt_gui_cpp python_qt_binding rqt_plot rqt_topic rqt_gui_cpp rqt_bag rqt_console rqt_graph rqt_msg rqt_publisher rqt_shell
ROS Distro: rolling
Job: ci_launcher
ci_launcher ran: https://ci.ros2.org/job/ci_launcher/20308

• Linux
• Linux-aarch64
• Linux-rhel
• Windows