ci: Drop the html reports

These are not of as much use as we'd like.

.gitlab-ci/test-docker.sh

@@ -35,15 +35,3 @@ xvfb-run -a -s "-screen 0 1024x768x24" \
         --print-errorlogs \
         --suite=gtk \
         --no-suite=gtk:a11y
-
-# Save the exit code
-exit_code=$?
-
-$srcdir/.gitlab-ci/meson-html-report.py \
-        --project-name=GTK \
-        --job-id="${CI_JOB_NAME}" \
-        --reftest-output-dir="testsuite/reftests/output" \
-        --output=report.html \
-        meson-logs/testlog.json
-
-exit $exit_code