[JS IR] Clean up code

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/IrElementToJsExpressionTransformer.kt

@@ -26,11 +26,6 @@ class IrElementToJsExpressionTransformer : BaseIrElementToJsNodeTransformer<JsEx
     override fun visitExpressionBody(body: IrExpressionBody, context: JsGenerationContext): JsExpression =
         body.expression.accept(this, context)
 
-    override fun visitFunctionReference(expression: IrFunctionReference, context: JsGenerationContext): JsExpression {
-        val irFunction = expression.symbol.owner
-        return irFunction.accept(IrFunctionToJsTransformer(), context).apply { name = null }
-    }
-
     override fun visitFunctionExpression(expression: IrFunctionExpression, context: JsGenerationContext): JsExpression {
         val irFunction = expression.function
         return irFunction.accept(IrFunctionToJsTransformer(), context).apply { name = null }

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/transformers/irToJs/jsAstUtils.kt

@@ -208,9 +208,7 @@ fun translateCallArguments(expression: IrMemberAccessExpression, context: JsGene
         val argument = expression.getValueArgument(index)
         val result = argument?.accept(transformer, context)
         if (result == null) {
-            assert(expression is IrFunctionAccessExpression && expression.symbol.owner.isExternalOrInheritedFromExternal()) {
-                1
-            }
+            assert(expression is IrFunctionAccessExpression && expression.symbol.owner.isExternalOrInheritedFromExternal())
             JsPrefixOperation(JsUnaryOperator.VOID, JsIntLiteral(1))
         } else
             result