diff --git a/third_party/src/main/java/com/jetbrains/lang/dart/analyzer/DartServerRootsHandler.java b/third_party/src/main/java/com/jetbrains/lang/dart/analyzer/DartServerRootsHandler.java
index c2d7d18da..44176c299 100644
--- a/third_party/src/main/java/com/jetbrains/lang/dart/analyzer/DartServerRootsHandler.java
+++ b/third_party/src/main/java/com/jetbrains/lang/dart/analyzer/DartServerRootsHandler.java
@@ -18,8 +18,6 @@
 import com.intellij.util.SmartList;
 import com.intellij.util.concurrency.AppExecutorUtil;
 import com.intellij.util.io.URLUtil;
-import com.jetbrains.lang.dart.ide.errorTreeView.DartProblemsView;
-import com.jetbrains.lang.dart.ide.errorTreeView.DartProblemsViewSettings;
 import com.jetbrains.lang.dart.sdk.DartSdk;
 import com.jetbrains.lang.dart.sdk.DartSdkLibUtil;
 import com.jetbrains.lang.dart.util.DartBuildFileUtil;
diff --git a/third_party/src/main/java/com/jetbrains/lang/dart/util/DartBuildFileUtil.java b/third_party/src/main/java/com/jetbrains/lang/dart/util/DartBuildFileUtil.java
index 53be15a65..19b4cd17f 100644
--- a/third_party/src/main/java/com/jetbrains/lang/dart/util/DartBuildFileUtil.java
+++ b/third_party/src/main/java/com/jetbrains/lang/dart/util/DartBuildFileUtil.java
@@ -5,8 +5,6 @@
 import com.intellij.openapi.roots.ProjectFileIndex;
 import com.intellij.openapi.roots.ProjectRootManager;
 import com.intellij.openapi.vfs.VirtualFile;
-import com.jetbrains.lang.dart.ide.errorTreeView.DartProblemsView;
-import com.jetbrains.lang.dart.ide.errorTreeView.DartProblemsViewSettings;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 
diff --git a/third_party/src/main/java/com/jetbrains/lang/dart/util/DartPsiImplUtil.java b/third_party/src/main/java/com/jetbrains/lang/dart/util/DartPsiImplUtil.java
index 9a9919abe..3ba4453f5 100644
--- a/third_party/src/main/java/com/jetbrains/lang/dart/util/DartPsiImplUtil.java
+++ b/third_party/src/main/java/com/jetbrains/lang/dart/util/DartPsiImplUtil.java
@@ -18,7 +18,6 @@
 
 import java.util.ArrayList;
 import java.util.Collections;
-import java.util.Iterator;
 import java.util.List;
 
 
diff --git a/third_party/src/main/java/com/jetbrains/lang/dart/util/PubspecYamlUtil.java b/third_party/src/main/java/com/jetbrains/lang/dart/util/PubspecYamlUtil.java
index 2b680966e..8f2841822 100644
--- a/third_party/src/main/java/com/jetbrains/lang/dart/util/PubspecYamlUtil.java
+++ b/third_party/src/main/java/com/jetbrains/lang/dart/util/PubspecYamlUtil.java
@@ -11,8 +11,6 @@
 import com.intellij.openapi.vfs.VfsUtilCore;
 import com.intellij.openapi.vfs.VirtualFile;
 import com.intellij.util.PairConsumer;
-import com.jetbrains.lang.dart.ide.errorTreeView.DartProblemsView;
-import com.jetbrains.lang.dart.ide.errorTreeView.DartProblemsViewSettings;
 import org.jetbrains.annotations.NotNull;
 import org.jetbrains.annotations.Nullable;
 import org.yaml.snakeyaml.DumperOptions;