[CQ] cleanup unused imports (flutter#8006)

Author: pq

flutter-idea/src/io/flutter/logging/DiagnosticsNode.java

@@ -10,25 +10,17 @@
 import com.google.gson.JsonNull;
 import com.google.gson.JsonObject;
 import com.intellij.openapi.diagnostic.Logger;
-import com.intellij.openapi.project.Project;
-import com.intellij.openapi.project.ProjectUtil;
 import com.intellij.openapi.util.text.StringUtil;
-import com.intellij.openapi.vfs.VirtualFile;
-import com.intellij.xdebugger.XSourcePosition;
-import com.jetbrains.lang.dart.analyzer.DartAnalysisServerService;
 import io.flutter.run.daemon.FlutterApp;
 import io.flutter.utils.CustomIconMaker;
 import io.flutter.utils.JsonUtils;
-import io.flutter.vmService.frame.DartVmServiceValue;
-import org.dartlang.analysis.server.protocol.HoverInformation;
 import org.dartlang.vm.service.element.InstanceRef;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
 import javax.swing.*;
 import java.util.*;
 import java.util.concurrent.CompletableFuture;
-import java.util.function.BiConsumer;
 
 /**
  * Defines diagnostics data for a [value].

flutter-idea/src/io/flutter/module/settings/ProjectType.java

@@ -10,7 +10,6 @@
 import io.flutter.FlutterUtils;
 import io.flutter.module.FlutterProjectType;
 import io.flutter.sdk.FlutterSdk;
-import io.flutter.sdk.FlutterSdkVersion;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 

flutter-idea/src/io/flutter/run/test/FlutterTestConfigProducer.java

@@ -17,9 +17,7 @@
 import io.flutter.dart.DartPlugin;
 import io.flutter.pub.PubRoot;
 import io.flutter.run.FlutterRunConfigurationProducer;
-import io.flutter.sdk.FlutterSdk;
 import org.jetbrains.annotations.NotNull;
-import org.jetbrains.annotations.Nullable;
 
 /**
  * Determines when we can run a test using "flutter test".