Update TODO.md

TODO.md

@@ -12,7 +12,6 @@
 * `SAVEPOINT` https://www.sqlite.org/lang_savepoint.html
 * add `static_assert` in crud `get*` functions in case user passes `where_t` instead of id to make compilation error more clear (example https://github.com/fnc12/sqlite_orm/issues/485)
 * named constraints: constraint can have name `CREATE TABLE heroes(id INTEGER CONSTRAINT pk PRIMARY KEY)`
-* `FILTER` clause https://sqlite.org/lang_aggfunc.html#aggfilter
 * scalar math functions https://sqlite.org/lang_mathfunc.html
 * `UPDATE FROM` support https://sqlite.org/lang_update.html#upfrom
 * `iif()` function https://sqlite.org/lang_corefunc.html#iif