JVM: remove BaseExpressionCodegen.pushClosureOnStack

It's only used by the old backend

compiler/backend/src/org/jetbrains/kotlin/codegen/BaseExpressionCodegen.kt

@@ -20,14 +20,12 @@ import org.jetbrains.kotlin.codegen.inline.NameGenerator
 import org.jetbrains.kotlin.codegen.inline.ReifiedTypeInliner.Companion.putReifiedOperationMarker
 import org.jetbrains.kotlin.codegen.inline.ReifiedTypeInliner.OperationKind
 import org.jetbrains.kotlin.codegen.inline.ReifiedTypeParametersUsages
-import org.jetbrains.kotlin.descriptors.ClassDescriptor
 import org.jetbrains.kotlin.types.TypeSystemCommonBackendContext
 import org.jetbrains.kotlin.types.model.KotlinTypeMarker
 import org.jetbrains.kotlin.types.model.TypeParameterMarker
 import org.jetbrains.org.objectweb.asm.commons.InstructionAdapter
 
 interface BaseExpressionCodegen {
-
     val frameMap: FrameMapBase<*>
 
     val visitor: InstructionAdapter
@@ -40,13 +38,6 @@ interface BaseExpressionCodegen {
 
     fun propagateChildReifiedTypeParametersUsages(reifiedTypeParametersUsages: ReifiedTypeParametersUsages)
 
-    fun pushClosureOnStack(
-        classDescriptor: ClassDescriptor,
-        putThis: Boolean,
-        callGenerator: CallGenerator,
-        functionReferenceReceiver: StackValue?
-    )
-
     fun markLineNumberAfterInlineIfNeeded(registerLineNumberAfterwards: Boolean)
 
     fun consumeReifiedOperationMarker(typeParameter: TypeParameterMarker)

compiler/ir/backend.jvm/src/org/jetbrains/kotlin/backend/jvm/codegen/ExpressionCodegen.kt

@@ -1431,15 +1431,6 @@ class ExpressionCodegen(
         }
     }
 
-    override fun pushClosureOnStack(
-        classDescriptor: ClassDescriptor,
-        putThis: Boolean,
-        callGenerator: CallGenerator,
-        functionReferenceReceiver: StackValue?
-    ) {
-        //TODO
-    }
-
     override fun markLineNumberAfterInlineIfNeeded(registerLineNumberAfterwards: Boolean) {
         if (noLineNumberScope || registerLineNumberAfterwards) {
             if (lastLineNumber > -1) {