[ros] retire ROS melodic images

Signed-off-by: Mikael Arguedas <[email protected]>

library/ros

@@ -1,33 +1,6 @@
 Maintainers: Tully Foote <[email protected]> (@tfoote)
 GitRepo: https://github.com/osrf/docker_images.git
 
-################################################################################
-# Release: melodic
-
-########################################
-# Distro: ubuntu:bionic
-
-Tags: melodic-ros-core, melodic-ros-core-bionic
-Architectures: amd64, arm32v7, arm64v8
-GitCommit: 443033d08e72da7282fe3b68167f01a2995118b8
-Directory: ros/melodic/ubuntu/bionic/ros-core
-
-Tags: melodic-ros-base, melodic-ros-base-bionic, melodic
-Architectures: amd64, arm32v7, arm64v8
-GitCommit: df19ab7d5993d3b78a908362cdcd1479a8e78b35
-Directory: ros/melodic/ubuntu/bionic/ros-base
-
-Tags: melodic-robot, melodic-robot-bionic
-Architectures: amd64, arm32v7, arm64v8
-GitCommit: df19ab7d5993d3b78a908362cdcd1479a8e78b35
-Directory: ros/melodic/ubuntu/bionic/robot
-
-Tags: melodic-perception, melodic-perception-bionic
-Architectures: amd64, arm32v7, arm64v8
-GitCommit: df19ab7d5993d3b78a908362cdcd1479a8e78b35
-Directory: ros/melodic/ubuntu/bionic/perception
-
-
 ################################################################################
 # Release: noetic