!!src/impl_: drop negative trait test temporarily

Author: bazaah

src/impl_/pymodule_state.rs

@@ -176,14 +176,6 @@ impl Default for StateCapsule {
     }
 }
 
-/// ```compile_fail,E0277
-/// fn is_sync<T: Sync>(_t: &T) {}
-///
-/// let this = StateCapsule::new();
-/// is_sync(&this);
-/// ```
-fn _test_not_type_assertions() {}
-
 #[cfg(test)]
 mod tests {
     use super::*;