Removed unused imports

src/main/java/rife/bld/dependencies/ArtifactRetriever.java

@@ -189,7 +189,13 @@ public abstract class ArtifactRetriever {
     }
 
     private static URLConnection openUrlConnection(RepositoryArtifact artifact) throws IOException {
-        var connection = new URL(artifact.location()).openConnection();
+        String location;
+        if (artifact.location().matches("[a-z][a-z0-9+\\-.]*://.*")) {
+            location = artifact.location();
+        } else {
+            location = new File(artifact.location()).toURI().toString();
+        }
+        var connection = new URL(location).openConnection();
         connection.setUseCaches(false);
         connection.setRequestProperty("User-Agent", "bld " + BldVersion.getVersion());
         return connection;

src/test/java/rife/bld/operations/TestJUnitOperation.java

@@ -13,7 +13,6 @@ import java.util.List;
 import java.util.function.Function;
 
 import static org.junit.jupiter.api.Assertions.*;
-import static org.junit.jupiter.api.Assertions.assertNull;
 
 public class TestJUnitOperation {
     @Test

src/test/java/rife/bld/operations/TestUberJarOperation.java

@@ -19,7 +19,6 @@ import java.util.concurrent.TimeUnit;
 import java.util.jar.JarFile;
 
 import static org.junit.jupiter.api.Assertions.*;
-import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class TestUberJarOperation {
     @Test

src/test/java/rife/bld/operations/TestUpdatesOperation.java

@@ -5,7 +5,6 @@
 package rife.bld.operations;
 
 import org.junit.jupiter.api.Test;
-import rife.bld.dependencies.DependencyScopes;
 import rife.bld.WebProject;
 import rife.bld.dependencies.*;
 import rife.tools.FileUtils;

src/test/java/rife/bld/operations/TestWarOperation.java

@@ -15,7 +15,6 @@ import java.util.jar.JarFile;
 import java.util.regex.Pattern;
 
 import static org.junit.jupiter.api.Assertions.*;
-import static org.junit.jupiter.api.Assertions.assertEquals;
 
 public class TestWarOperation {
     @Test