patch 9.0.2002: Vim9: need cleanup of class related interface code Commit: https://github.com/vim/vim/commit/b852305dbf42f1206ecc6ae414fc200235fe2963 Author: Yegappan Lakshmanan <yegappan@yahoo.com> Date: Sun Oct 8 19:07:39 2023 +0200 patch 9.0.2002: Vim9: need cleanup of class related interface code Problem: Vim9: need cleanup of class related interface code Solution: Remove the unused class variable and class method related code for interfaces. Remove unused class variable and class method related code for interfaces. Refactor the code. Optimize the object/class member double lookup in compile_lhs(). Change unused global functions to static functions. closes: #13302 Signed-off-by: Christian Brabandt <cb@256bit.org> Co-authored-by: Yegappan Lakshmanan <yegappan@yahoo.com>