diff --git a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt b/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt
deleted file mode 100644
index 829d0d67d0f..00000000000
--- a/kotlin-native/backend.native/compiler/ir/backend.native/src/org/jetbrains/kotlin/backend/konan/ToplevelPhases.kt
+++ /dev/null
@@ -1,40 +0,0 @@
-/*
- * Copyright 2010-2022 JetBrains s.r.o. and Kotlin Programming Language contributors.
- * Use of this source code is governed by the Apache 2.0 license that can be found in the license/LICENSE.txt file.
- */
-
-package org.jetbrains.kotlin.backend.konan
-
-
-/*
- * Sometimes psi2ir produces IR with non-trivial variance in super types of SAM conversions (this is a language design issue).
- * Earlier this was solved with just erasing all such variances but this might lead to some other hard to debug problems,
- * so after handling the majority of corner cases correctly in psi2ir it is safe to assume that such cases don't get here and
- * even if they do, then it's better to throw an error right away than to dig out weird crashes down the pipeline or even at runtime.
- * We explicitly check this, also fixing older klibs built with previous compiler versions by applying the same trick as before.
- */
-//internal val checkSamSuperTypesPhase = konanUnitPhase(
-//        op = {
-//            // Handling types in current module not recursively:
-//            // psi2ir can produce SAM conversions with variances in type arguments of type arguments.
-//            // See https://youtrack.jetbrains.com/issue/KT-49384.
-//            // So don't go deeper than top-level arguments to avoid the compiler emitting false-positive errors.
-//            // Lowerings can handle this.
-//            // Also such variances are allowed in the language for manual implementations of interfaces.
-//            irModule!!.files
-//                    .forEach { SamSuperTypesChecker(this, it, mode = SamSuperTypesChecker.Mode.THROW, recurse = false).run() }
-//            // TODO: This is temporary for handling klibs produced with earlier compiler versions.
-//            // Handling types in dependencies recursively, just to be extra safe: don't change something that works.
-//            irModules.values
-//                    .flatMap { it.files }
-//                    .forEach { SamSuperTypesChecker(this, it, mode = SamSuperTypesChecker.Mode.ERASE, recurse = true).run() }
-//        },
-//        name = "CheckSamSuperTypes",
-//        description = "Check SAM conversions super types"
-//)
-
-// The original comment around [checkSamSuperTypesPhase] still holds, but in order to be on par with JVM_IR
-// (which doesn't report error for these corner cases), we turn off the checker for now (the problem with variances
-// is workarounded in [FunctionReferenceLowering] by taking erasure of SAM conversion type).
-// Also see https://youtrack.jetbrains.com/issue/KT-50399 for more details.
-//        disable(checkSamSuperTypesPhase)
\ No newline at end of file