Remove useless TODOs

idea/idea-native/src/org/jetbrains/konan/KonanApplicationComponent.kt

@@ -10,12 +10,13 @@ import com.intellij.ide.util.TipAndTrickBean
 import com.intellij.openapi.components.ApplicationComponent
 import com.intellij.openapi.extensions.Extensions
 import com.intellij.openapi.fileTypes.FileTypeManager
+import org.jetbrains.kotlin.konan.library.KLIB_FILE_EXTENSION
 
 class KonanApplicationComponent : ApplicationComponent {
     override fun getComponentName(): String = "KonanApplicationComponent"
 
     override fun initComponent() {
-        FileTypeManager.getInstance().associateExtension(ArchiveFileType.INSTANCE, "klib")
+        FileTypeManager.getInstance().associateExtension(ArchiveFileType.INSTANCE, KLIB_FILE_EXTENSION)
 
         val extensionPoint = Extensions.getRootArea().getExtensionPoint(TipAndTrickBean.EP_NAME)
         for (name in arrayOf("Kotlin.html", "Kotlin_project.html", "Kotlin_mix.html", "Kotlin_Java_convert.html")) {

idea/idea-native/src/org/jetbrains/konan/analyser/KonanAnalyzerFacade.kt

@@ -67,7 +67,7 @@ object KonanAnalyzerFacade : ResolverForModuleFactory() {
 
             val moduleDescriptors = module.createResolvedModuleDescriptors(
                 moduleContext.storageManager,
-                moduleContext.module.builtIns, // FIXME(ddol): investigate: reuse existing builtIns (from KonanPlatformSupport) or create new one
+                moduleContext.module.builtIns,
                 languageVersionSettings
             )