revert b96941dddd04 and c13b4589fddf, which dramatically inflate proof terms
revert b96941dddd04 and c13b4589fddf, which dramatically inflate proof terms

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle