tests changed after KT-2745

Write exact Kotlin type (if it's mapped) in signature while generating bytecode
 #KT-2745 fixed

compiler/testData/writeSignature/ListOfCharSequence.kt

@@ -4,4 +4,4 @@ fun foo(p: List<CharSequence>) = 1
 // method: namespace::foo
 // jvm signature:     (Ljava/util/List;)I
 // generic signature: (Ljava/util/List<Ljava/lang/CharSequence;>;)I
-// kotlin signature:  (Ljava/util/List<Ljava/lang/CharSequence;>;)I // TODO: skip Kotlin signature
+// kotlin signature:  (Ljet/List<Ljava/lang/CharSequence;>;)I // TODO: skip Kotlin signature

compiler/testData/writeSignature/ListOfStar.kt

@@ -4,4 +4,4 @@ fun listOfStar(): List<*> = throw Exception()
 // method: namespace::listOfStar
 // jvm signature:     ()Ljava/util/List;
 // generic signature: ()Ljava/util/List<+Ljava/lang/Object;>;
-// kotlin signature:  ()Ljava/util/List<+?Ljava/lang/Object;>;
+// kotlin signature:  ()Ljet/List<+?Ljava/lang/Object;>;

compiler/testData/writeSignature/constructor/ConstructorCollectionParameter.kt

@@ -4,4 +4,4 @@ class TestingKotlinCollections(val arguments: Collection<String>)
 // method: TestingKotlinCollections::<init>
 // jvm signature:     (Ljava/util/Collection;)V
 // generic signature: (Ljava/util/Collection<Ljava/lang/String;>;)V
-// kotlin signature:  (Ljava/util/Collection<Ljava/lang/String;>;)null
+// kotlin signature:  (Ljet/Collection<Ljava/lang/String;>;)null

libraries/tools/kdoc/src/test/kotlin/test/kotlin/kdoc/KDocTest.kt

@@ -38,8 +38,7 @@ class KDocTest {
         config.docOutputDir = outDir.toString()!!
         config.title = "Kotlin API"
 
-        //todo@svtk KT-2745
-        val ignorePackages = config.ignorePackages as MutableSet<String>
+        val ignorePackages = config.ignorePackages
         ignorePackages.add("org.jetbrains.kotlin")
         ignorePackages.add("java")
         ignorePackages.add("jet")