removed ununsed asubtype relation between a ATree (achar) and a AType (\achar-class) to avoid confusion between types and values.#2533

PaulKlint merged 4 commits intomainusethesource/rascal:mainfrom

replace-char-by-char-class-atypeusethesource/rascal:replace-char-by-char-class-atypeCopy head branch name to clipboard