refactor: Fix some warnings

Author: MarcellPerger1

src/main/java/net/marcellperger/mathexpr/cli/minicli/CLIOption.java

@@ -1,10 +1,8 @@
 package net.marcellperger.mathexpr.cli.minicli;
 
-import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import java.util.List;
-import java.util.Objects;
 
 public abstract class CLIOption<T> {
     List<String> names;

src/main/java/net/marcellperger/mathexpr/cli/minicli/MiniCLI.java

@@ -10,7 +10,6 @@
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;
-import java.util.Objects;
 
 public class MiniCLI {
     Map<String, CLIOption<?>> options = new HashMap<>();

src/main/java/net/marcellperger/mathexpr/util/Util.java

@@ -108,17 +108,6 @@ public static void expectOrFail(boolean cond) {
         if(!cond) throw new AssertionError("Assertion failed in expectOrFail");
     }
 
-//    @Contract("_, _ -> param1")
-//    public static<T> T expectOrFail(T value, @NotNull Predicate<T> predicate, ) {
-//        if(!predicate.test(value)) throw new AssertionError("Assertion failed in expectOrFail");
-//        return value;
-//    }
-//    @Contract("_, true -> param1; _, false -> fail")
-//    public static<T> T expectOrFail(T value, boolean cond) {
-//        if(!cond) throw new AssertionError("Assertion failed in expectOrFail");
-//        return value;
-//    }
-
     @Contract("_, _ -> param1")
     public static<T extends Throwable> @NotNull T withCause(@NotNull T exc, @Nullable Throwable cause) {
         if(cause != null) exc.initCause(cause);