Updated rust and fixed checks.

Signed-off-by: Pavel Kirilin <win10@list.ru>

src/bot/filters/message_fitlers.rs

@@ -45,10 +45,6 @@ pub struct MessageDirectionFilter(pub MessageDirection);
 #[derive(Clone)]
 pub struct TextFilter<'a>(pub &'a [&'a str], pub TextMatchMethod);
 
-/// Filters text by predicate.
-#[derive(Clone)]
-pub struct ReverseTextFilter<'a>(pub &'a [&'a str], pub TextMatchMethod);
-
 #[derive(Clone)]
 pub struct NotFilter<T: Filter + Clone>(pub T);