Removed a println

src/problem.rs

@@ -55,7 +55,6 @@ where
             if self.callbacks.len() > 0 {
                 // Check for events occurring
                 for callback in &self.callbacks {
-                    println!("{}", (callback.event)(self.ode.t, self.ode.y, &self.ode.params) * (callback.event)(self.ode.t + step, new_y, &self.ode.params));
                     if (callback.event)(self.ode.t, self.ode.y, &self.ode.params) * (callback.event)(self.ode.t + step, new_y, &self.ode.params) < 0.0 {
                         // If the event crossed zero, then find the root
                         let f = |test_t| {