gha: removes ROS 2 ICI upstream ws config (unused)

Author: DavidPL1

.github/workflows/ci.ros2.yaml

@@ -44,11 +44,9 @@ jobs:
       # CXXFLAGS: -Wall -Wextra -Wwrite-strings -Wunreachable-code -Wpointer-arith -Wredundant-decls
       CXXFLAGS: -Wwrite-strings -Wunreachable-code -Wpointer-arith -Wredundant-decls
       CLANG_TIDY_ARGS: --fix --fix-errors --format-style=file
-      UPSTREAM_WORKSPACE: .github/workflows/upstream.ros2.rosinstall
       # Install and start xvfb for GLFW
       AFTER_INIT: ${{ matrix.render_backend == 'GLFW' && 'apt-get install -qy xvfb; Xvfb :99 &' || '' }}
       # Pull any updates to the upstream workspace
-      AFTER_SETUP_UPSTREAM_WORKSPACE: vcs pull $BASEDIR/upstream_ws/src
       AFTER_SETUP_DOWNSTREAM_WORKSPACE: vcs pull $BASEDIR/downstream_ws/src
       # Clear ccache stats before and log the stats after the build
       AFTER_SETUP_CCACHE: ccache --zero-stats --max-size=10.0G
@@ -59,7 +57,6 @@ jobs:
         -DCMAKE_BUILD_TYPE=${{ matrix.env.CCOV && 'Debug' || 'Release'}}
         -DCMAKE_CXX_FLAGS="-Werror $CXXFLAGS${{ matrix.env.CCOV && ' --coverage -O2 -fno-omit-frame-pointer'}}"
         -DRENDER_BACKEND=${{ matrix.render_backend }}
-      UPSTREAM_CMAKE_ARGS: -DCMAKE_CXX_FLAGS= -DCMAKE_CXX_STANDARD=17
 
       CCACHE_DIR: ${{ github.workspace }}/.ccache
       BASEDIR: ${{ github.workspace }}/.work