refactor(cubesql): Enable manual_filter warning

Author: mcheshkov

rust/cubesql/cubesql/Cargo.toml

@@ -104,7 +104,6 @@ iter_next_slice = "allow"
 len_without_is_empty = "allow"
 len_zero = "allow"
 let_and_return = "allow"
-manual_filter = "allow"
 manual_flatten = "allow"
 manual_is_ascii_check = "allow"
 manual_map = "allow"