Remove unknown_clippy_lints

Author: mvines

libraries/math/src/uint.rs

@@ -3,7 +3,6 @@
 // required for clippy
 #![allow(clippy::assign_op_pattern)]
 #![allow(clippy::ptr_offset_with_cast)]
-#![allow(clippy::unknown_clippy_lints)]
 #![allow(clippy::manual_range_contains)]
 
 use uint::construct_uint;