[FE 1.0] Return to the old type intersection emptiness check

This reverts commit 8227c4b603.
#KT-53656 Fixed

core/descriptors/src/org/jetbrains/kotlin/types/TypeUtils.kt

@@ -22,7 +22,6 @@ import org.jetbrains.kotlin.descriptors.*
 import org.jetbrains.kotlin.descriptors.annotations.Annotations
 import org.jetbrains.kotlin.resolve.DescriptorUtils
 import org.jetbrains.kotlin.resolve.calls.inference.isCaptured
-import org.jetbrains.kotlin.resolve.checkers.EmptyIntersectionTypeChecker
 import org.jetbrains.kotlin.resolve.descriptorUtil.builtIns
 import org.jetbrains.kotlin.types.*
 import org.jetbrains.kotlin.types.checker.*
@@ -31,7 +30,6 @@ import org.jetbrains.kotlin.types.model.TypeArgumentMarker
 import org.jetbrains.kotlin.types.model.TypeVariableTypeConstructorMarker
 import org.jetbrains.kotlin.utils.addToStdlib.safeAs
 import org.jetbrains.kotlin.types.error.ErrorUtils
-import org.jetbrains.kotlin.types.model.KotlinTypeMarker
 import kotlin.contracts.ExperimentalContracts
 import kotlin.contracts.contract
 
@@ -397,8 +395,3 @@ fun isUnresolvedType(type: KotlinType): Boolean {
     }
     return type is ErrorType && type.kind.isUnresolved
 }
-
-fun isEmptyIntersectionTypeCompatible(vararg types: KotlinTypeMarker): Boolean =
-    EmptyIntersectionTypeChecker.computeEmptyIntersectionEmptiness(
-        SimpleClassicTypeSystemContext, types.toList(), compatibilityModeEnabled = true
-    )?.kind == EmptyIntersectionTypeKind.COMPATIBLE

core/descriptors/src/org/jetbrains/kotlin/types/checker/ClassicTypeSystemContext.kt

@@ -425,10 +425,11 @@ interface ClassicTypeSystemContext : TypeSystemInferenceExtensionContext, TypeSy
         return when (this) {
             is SimpleTypeMarker -> this.withNullability(nullable)
             is FlexibleTypeMarker -> createFlexibleType(lowerBound().withNullability(nullable), upperBound().withNullability(nullable))
-            else -> asSimpleType()?.withNullability(nullable) ?: error("Unwrapped type should be simple")
+            else -> error("sealed")
         }
     }
 
+
     override fun newTypeCheckerState(
         errorTypesEqualToAnything: Boolean,
         stubTypesEqualToAnything: Boolean
@@ -477,20 +478,6 @@ interface ClassicTypeSystemContext : TypeSystemInferenceExtensionContext, TypeSy
         return this.replaceAnnotations(Annotations.create(annotationsWithoutExact))
     }
 
-    override fun KotlinTypeMarker.canHaveSubtypes(typeChecker: AbstractTypeChecker): Boolean? {
-        require(this is KotlinType, this::errorMessage)
-
-        val kotlinTypeChecker = object : KotlinTypeChecker {
-            override fun isSubtypeOf(subtype: KotlinType, supertype: KotlinType): Boolean =
-                typeChecker.isSubtypeOf(this@ClassicTypeSystemContext, subtype, supertype)
-
-            override fun equalTypes(a: KotlinType, b: KotlinType): Boolean =
-                typeChecker.equalTypes(this@ClassicTypeSystemContext, a, b)
-        }
-
-        return TypeUtils.canHaveSubtypes(kotlinTypeChecker, this)
-    }
-
     override fun KotlinTypeMarker.hasExactAnnotation(): Boolean {
         require(this is UnwrappedType, this::errorMessage)
         return hasExactInternal(this)