[TM-124] Remove duplicated licensing information
In !353 (merged) .md files accidentally have both copyright headers and standalonw .license
files. Make sure that there is something one.
The general rule is simple:
- For README and CHANGES files that belong to Haskell packages, use standalone files (because Hackage doesn’t like HTML comments in Markdown files that it shows).
- For everything else, use the header in place.
- There is also an autodoc sample. Since it’s a sample, do not include the header in it.
Edited by Ivan Gromakovskii