unused imports removed

Author: thurka

visualvm/core/src/org/graalvm/visualvm/core/datasource/DataSourceProvider.java

@@ -28,7 +28,6 @@
 import org.graalvm.visualvm.core.datasupport.DataChangeEvent;
 import org.graalvm.visualvm.core.datasupport.DataChangeListener;
 import org.graalvm.visualvm.core.datasupport.Utils;
-import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.HashSet;

visualvm/gotosource/src/org/graalvm/visualvm/gotosource/java/JavaClass.java

@@ -25,7 +25,6 @@
 package org.graalvm.visualvm.gotosource.java;
 
 import java.util.ArrayList;
-import java.util.Collections;
 import java.util.List;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;

visualvm/graalvm/src/org/graalvm/visualvm/graalvm/svm/SVMJVMImpl.java

@@ -47,7 +47,6 @@
 import org.graalvm.visualvm.application.jvm.MonitoredData;
 import org.graalvm.visualvm.application.jvm.MonitoredDataListener;
 import org.graalvm.visualvm.core.datasupport.Stateful;
-import org.graalvm.visualvm.host.Host;
 import org.graalvm.visualvm.tools.jvmstat.JvmJvmstatModel;
 import org.graalvm.visualvm.tools.jvmstat.JvmJvmstatModelFactory;
 import org.graalvm.visualvm.tools.jvmstat.JvmstatListener;

visualvm/jfr/src/org/graalvm/visualvm/jfr/views/socketio/SocketIOViewSupport.java

@@ -35,7 +35,6 @@
 import java.awt.event.HierarchyListener;
 import java.time.Duration;
 import javax.swing.BorderFactory;
-import javax.swing.ComboBoxModel;
 import javax.swing.DefaultComboBoxModel;
 import javax.swing.JButton;
 import javax.swing.JComboBox;

visualvm/jfr/src/org/graalvm/visualvm/jfr/views/threads/ThreadsViewSupport.java

@@ -35,7 +35,6 @@
 import java.util.Comparator;
 import java.util.HashMap;
 import java.util.HashSet;
-import java.util.Iterator;
 import java.util.List;
 import java.util.Map;
 import java.util.Set;

visualvm/profiler/src/org/graalvm/visualvm/profiler/ApplicationProfilerView.java

@@ -37,7 +37,6 @@
 import java.beans.PropertyChangeEvent;
 import java.beans.PropertyChangeListener;
 import java.net.URL;
-import java.text.MessageFormat;
 import java.util.ArrayList;
 import java.util.List;
 import javax.swing.BorderFactory;