KT-697 Remove unnecessary NotNull annotation import from Kotlin code

src/org/jetbrains/jet/j2k/Converter.java

@@ -432,7 +432,9 @@ public class Converter {
   @NotNull
   private static List<Import> importsToImportList(@NotNull PsiImportStatementBase[] imports) {
     List<Import> result = new LinkedList<Import>();
-    for (PsiImportStatementBase t : imports) result.add(importToImport(t));
+    for (PsiImportStatementBase i : imports)
+      if (!NOT_NULL_ANNOTATIONS.contains(importToImport(i).getName()))
+        result.add(importToImport(i));
     return result;
   }
 

src/org/jetbrains/jet/j2k/ast/Import.java

@@ -8,6 +8,10 @@ import org.jetbrains.annotations.NotNull;
 public class Import extends Node {
   private final String myName;
 
+  public String getName() {
+    return myName;
+  }
+
   public Import(String name) {
     myName = name;
   }

testData/ast/annotations/file/jetbrainsNotNull.kt

@@ -1,5 +1,4 @@
 namespace test
-import org.jetbrains.annotations.NotNull
 public open class Test(str : String) {
 {
 $myStr = str

testData/ast/importStatement/file/simpleImport.kt

@@ -1,4 +1,3 @@
 namespace org.jetbrains.jet.j2k
-import org.jetbrains.annotations.NotNull
 public open class Converter() {
 }

testData/ast/packageStatement/file/orgJetbrainsJetJ2kIn.kt

@@ -1,5 +1,4 @@
 namespace org.jetbrains.jet.j2k.`in`
-import org.jetbrains.annotations.NotNull
 import org.jetbrains.annotations.Nullable
 public open class Converter() {
 }