Remove simple_sat_program example as it is in the lib.rs doc

examples/simple_sat_program.rs

@@ -1,24 +0,0 @@
-use cp_sat::builder::CpModelBuilder;
-use cp_sat::proto::CpSolverStatus;
-
-fn main() {
-    let mut model = CpModelBuilder::default();
-
-    let x = model.new_int_var_with_name([(0, 2)], "x");
-    let y = model.new_int_var_with_name([(0, 2)], "y");
-    let z = model.new_int_var_with_name([(0, 2)], "z");
-
-    model.add_ne(x, y);
-
-    let response = model.solve();
-    println!(
-        "{}",
-        cp_sat::ffi::cp_solver_response_stats(&response, false)
-    );
-
-    if response.status() == CpSolverStatus::Optimal {
-        println!("x = {}", x.solution_value(&response));
-        println!("y = {}", y.solution_value(&response));
-        println!("z = {}", z.solution_value(&response));
-    }
-}