diff --git a/compiler/frontend/src/org/jetbrains/kotlin/resolve/lazy/descriptors/LazyClassMemberScope.kt b/compiler/frontend/src/org/jetbrains/kotlin/resolve/lazy/descriptors/LazyClassMemberScope.kt
index e642d2d157b..83f47863ba1 100644
--- a/compiler/frontend/src/org/jetbrains/kotlin/resolve/lazy/descriptors/LazyClassMemberScope.kt
+++ b/compiler/frontend/src/org/jetbrains/kotlin/resolve/lazy/descriptors/LazyClassMemberScope.kt
@@ -44,7 +44,6 @@ import org.jetbrains.kotlin.storage.getValue
 import org.jetbrains.kotlin.types.KotlinType
 import org.jetbrains.kotlin.types.checker.KotlinTypeRefiner
 import org.jetbrains.kotlin.types.refinement.TypeRefinement
-import org.jetbrains.kotlin.utils.addToStdlib.flatMapToNullable
 import java.util.*
 
 open class LazyClassMemberScope(
@@ -116,7 +115,6 @@ open class LazyClassMemberScope(
             by lazy(LazyThreadSafetyMode.PUBLICATION) {
                 mutableSetOf<Name>().apply {
                     addAll(declarationProvider.getDeclarationNames())
-                    addAll(c.syntheticResolveExtension.getSyntheticFunctionNames(thisDescriptor))
                     supertypes.flatMapTo(this) {
                         it.memberScope.getFunctionNames()
                     }
@@ -125,32 +123,6 @@ open class LazyClassMemberScope(
                 }
             }
 
-    private val _classifierNames: Set<Name>?
-            by lazy(LazyThreadSafetyMode.PUBLICATION) {
-                mutableSetOf<Name>().apply {
-                    supertypes.flatMapToNullable(this) {
-                        it.memberScope.getClassifierNames()
-                    } ?: return@lazy null
-
-                    addAll(declarationProvider.getDeclarationNames())
-                    with(c.syntheticResolveExtension) {
-                        getSyntheticCompanionObjectNameIfNeeded(thisDescriptor)?.let { add(it) }
-                        addAll(getSyntheticNestedClassNames(thisDescriptor))
-                    }
-                }
-            }
-
-    private val _allNames: Set<Name>?
-            by lazy(LazyThreadSafetyMode.PUBLICATION) {
-                val classifiers = getClassifierNames() ?: return@lazy null
-
-                mutableSetOf<Name>().apply {
-                    addAll(getVariableNames())
-                    addAll(getFunctionNames())
-                    addAll(classifiers)
-                }
-            }
-
     private fun getDataClassRelatedFunctionNames(): Collection<Name> {
         val declarations = mutableListOf<DeclarationDescriptor>()
         addDataClassMethods(declarations, NoLookupLocation.WHEN_GET_ALL_DESCRIPTORS)
@@ -159,11 +131,6 @@ open class LazyClassMemberScope(
 
     override fun getVariableNames() = _variableNames
     override fun getFunctionNames() = _functionNames
-    override fun getClassifierNames() = _classifierNames
-
-    override fun definitelyDoesNotContainName(name: Name): Boolean {
-        return _allNames?.let { name !in it } ?: false
-    }
 
     private interface MemberExtractor<out T : CallableMemberDescriptor> {
         fun extract(extractFrom: KotlinType, name: Name): Collection<T>
diff --git a/compiler/resolution/src/org/jetbrains/kotlin/resolve/scopes/LexicalChainedScope.kt b/compiler/resolution/src/org/jetbrains/kotlin/resolve/scopes/LexicalChainedScope.kt
index 983f0d01f9b..a65ef7acc9e 100644
--- a/compiler/resolution/src/org/jetbrains/kotlin/resolve/scopes/LexicalChainedScope.kt
+++ b/compiler/resolution/src/org/jetbrains/kotlin/resolve/scopes/LexicalChainedScope.kt
@@ -91,10 +91,6 @@ class LexicalChainedScope private constructor(
         p.println("}")
     }
 
-    override fun definitelyDoesNotContainName(name: Name): Boolean {
-        return memberScopes.all { it.definitelyDoesNotContainName(name) }
-    }
-
     companion object {
 
         @JvmOverloads
diff --git a/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/MemberScope.kt b/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/MemberScope.kt
index bd8224e80ed..59a3c6f9eff 100644
--- a/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/MemberScope.kt
+++ b/core/descriptors/src/org/jetbrains/kotlin/resolve/scopes/MemberScope.kt
@@ -46,8 +46,6 @@ interface MemberScope : ResolutionScope {
             p.println("Empty member scope")
         }
 
-        override fun definitelyDoesNotContainName(name: Name): Boolean = true
-
         override fun getFunctionNames() = emptySet<Name>()
         override fun getVariableNames() = emptySet<Name>()
         override fun getClassifierNames() = emptySet<Name>()