Build/pandoc fe cleanup #2101

Job	Run time
List-Courses	5s
Contrib scripts check	1m 13s
Labs (ubuntu-latest)	42s
Labs-Slides	1m 5s
Python scripts black lint check	11s
Slides (static_analysis_via_compiler)	1m 2s
Slides (fundamentals_of_ada)	1m 4s
Slides (gnat_project_facility)	1m 4s
Slides (gnat_studio)	1m 6s
Slides (toolchain)	55s
Slides (gnatsas)	1m 4s
Slides (gnatdas)	1m 5s
Slides (spark_for_ada_programmers)	1m 4s
Slides (advanced_exception_analysis)	1m 5s
Slides (fundamentals_of_ada/opat.txt)	1m 5s
Slides (fundamentals_of_ada/standard_course.txt)	1m 4s
Slides (fundamentals_of_ada/advanced.txt)	59s
Slides (gnat_project_facility/standard_course.txt)	1m 5s
Slides (gnat_studio/course.txt)	1m 4s
Slides (toolchain/gnat_toolchain.txt)	1m 4s
Slides (spark_for_ada_programmers/course.txt)	1m 2s
	20m 8s

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