Hides the instances of a block in a course.
HIDE BLOCK <blocktype> IN <courseidentifier> HIDE BLOCK <blockidentifier> (todo)
HIDE BLOCK latest_news IN idnumber:U345654
HIDE BLOCK idnumber:"B203_52"
HIDE BLOCK current
None
(*) This assumes the “block identifiers” provided by the installation of certain third-party plugins are in place.