IR: remove KotlinIrLinker.checkAccessibility

This sanity check conflicted with cases where visibility test is
suppressed in the frontend.

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/KotlinIrLinker.kt

@@ -527,7 +527,6 @@ abstract class KotlinIrLinker(
     protected abstract fun readFile(moduleDescriptor: ModuleDescriptor, fileIndex: Int): ByteArray
     protected abstract fun readFileCount(moduleDescriptor: ModuleDescriptor): Int
 
-    protected abstract fun checkAccessibility(declarationDescriptor: DeclarationDescriptor): Boolean
     protected open fun handleNoModuleDeserializerFound(key: UniqId): DeserializationState<*> {
         error("Deserializer for declaration $key is not found")
     }
@@ -556,10 +555,6 @@ abstract class KotlinIrLinker(
         //
         if (!topLevelDescriptor.shouldBeDeserialized()) return null
 
-        require(checkAccessibility(topLevelDescriptor)) {
-            "Locally accessible declarations should not be accessed here $topLevelDescriptor"
-        }
-
         if (topLevelDescriptor !is DeserializedClassDescriptor && topLevelDescriptor !is DeserializedCallableMemberDescriptor) {
             return null
         }

compiler/ir/serialization.js/src/org/jetbrains/kotlin/ir/backend/js/lower/serialization/ir/JsIrLinker.kt

@@ -51,10 +51,5 @@ class JsIrLinker(
     override fun readFileCount(moduleDescriptor: ModuleDescriptor) =
         moduleDescriptor.kotlinLibrary.fileCount()
 
-    override fun checkAccessibility(declarationDescriptor: DeclarationDescriptor): Boolean {
-        require(declarationDescriptor is DeclarationDescriptorWithVisibility)
-        return declarationDescriptor.isPublishedApi() || declarationDescriptor.visibility.let { it.isPublicAPI || it == Visibilities.INTERNAL }
-    }
-
     private val ModuleDescriptor.userName get() = kotlinLibrary.libraryFile.absolutePath
 }

compiler/ir/serialization.jvm/src/org/jetbrains/kotlin/ir/backend/jvm/serialization/JvmIrLinker.kt

@@ -62,14 +62,5 @@ class JvmIrLinker(
     override fun readFileCount(moduleDescriptor: ModuleDescriptor) =
         moduleDescriptor.kotlinLibrary.fileCount()
 
-    override fun checkAccessibility(declarationDescriptor: DeclarationDescriptor): Boolean {
-        require(declarationDescriptor is DeclarationDescriptorWithVisibility)
-        return declarationDescriptor.isPublishedApi() ||
-                declarationDescriptor.visibility.let {
-                    it.isPublicAPI || it == Visibilities.INTERNAL ||
-                            it == JavaVisibilities.PACKAGE_VISIBILITY || it == JavaVisibilities.PROTECTED_AND_PACKAGE
-                }
-    }
-
     private val ModuleDescriptor.userName get() = kotlinLibrary.libraryFile.absolutePath
 }