Remove unused imports

src/test/java/io/vavr/jackson/datatype/FunctionTest.java

@@ -19,7 +19,6 @@
 import io.vavr.Function6;
 import io.vavr.Function7;
 import io.vavr.Function8;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 import java.io.IOException;

src/test/java/io/vavr/jackson/datatype/OptionPlainTest.java

@@ -1,7 +1,6 @@
 package io.vavr.jackson.datatype;
 
 import io.vavr.control.Option;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 import java.io.IOException;

src/test/java/io/vavr/jackson/datatype/PriorityQueueTest.java

@@ -10,7 +10,6 @@
 import com.fasterxml.jackson.dataformat.xml.annotation.JacksonXmlRootElement;
 import com.fasterxml.jackson.datatype.jsr310.JavaTimeModule;
 import io.vavr.collection.PriorityQueue;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 import javax.xml.bind.annotation.XmlElement;

src/test/java/io/vavr/jackson/datatype/ScalarTest.java

@@ -3,7 +3,6 @@
 import com.fasterxml.jackson.core.type.TypeReference;
 import com.fasterxml.jackson.databind.DeserializationFeature;
 import io.vavr.collection.List;
-import org.junit.jupiter.api.Assertions;
 import org.junit.jupiter.api.Test;
 
 import java.io.IOException;