removing unneccessary imports

Author: PiaFlessner

src/main/java/visualComponents/ToolBox/OuterContainer.java

@@ -3,7 +3,6 @@
 import javax.swing.JPanel;
 import java.awt.Dimension;
 import java.awt.GridLayout;
-import java.awt.FlowLayout;
 import java.awt.Color;
 
 public class OuterContainer extends JPanel {

src/tests/HeaderConverterTest.java

@@ -3,8 +3,6 @@
 import static org.junit.Assert.assertEquals;
 
 import java.io.File;
-import java.io.FileReader;
-import java.io.IOException;
 
 import org.junit.Test;
 import org.junit.jupiter.api.AfterEach;

src/tests/HeaderTest.java

@@ -137,7 +137,6 @@ public void testGetOverallIndex() {
     public void testGetOverallIndexComplicatedStructure(){
         Header h111 = new Header("1.1.1", 1,h11,false);
         Header h112 = new Header("1.1.2", 2,h11,false);
-        Header h2 = new Header("2", 2,h0,false);
         Header h21 = new Header("2.1", 1,h2,false);
         Header h22 = new Header("2.2", 2,h2,false);
         Header h3 = new Header("3", 3,h0,false);