Fixed JUnit Imports (Maven didn't compile correctly)

src/test/java/de/tims/fleetstorm/matchfield/CoordinateTest.java

@@ -1,9 +1,7 @@
 package de.tims.fleetstorm.matchfield;
 
+import static org.junit.jupiter.api.Assertions.*;
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
-import static org.junit.jupiter.api.Assertions.assertEquals;
 
 import java.util.stream.Stream;
 

src/test/java/de/tims/fleetstorm/matchfield/MatchfieldShipTest.java

@@ -1,9 +1,8 @@
 
 package de.tims.fleetstorm.matchfield;
 
+import static org.junit.jupiter.api.Assertions.*;
 import static org.assertj.core.api.Assertions.assertThat;
-import static org.junit.Assert.assertFalse;
-import static org.junit.Assert.assertTrue;
 
 import java.util.stream.Stream;