[JS IR BE] Minor dynamic refactoring

compiler/ir/backend.js/src/org/jetbrains/kotlin/ir/backend/js/JsIntrinsics.kt

@@ -28,6 +28,8 @@ class JsIntrinsics(private val irBuiltIns: IrBuiltIns, val context: JsIrBackendC
     private val externalPackageFragmentSymbol = IrExternalPackageFragmentSymbolImpl(context.internalPackageFragmentDescriptor)
     private val externalPackageFragment = IrExternalPackageFragmentImpl(externalPackageFragmentSymbol)
 
+    // TODO: Should we drop operator intrinsics in favor of IrDynamicOperatorExpression?
+
     // Equality operations:
 
     val jsEqeq = binOpBool("jsEqeq")

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

@@ -13,7 +13,6 @@ import org.jetbrains.kotlin.ir.declarations.IrClass
 import org.jetbrains.kotlin.ir.declarations.IrConstructor
 import org.jetbrains.kotlin.ir.declarations.IrSimpleFunction
 import org.jetbrains.kotlin.ir.expressions.*
-import org.jetbrains.kotlin.ir.types.IrDynamicType
 import org.jetbrains.kotlin.ir.util.*
 import org.jetbrains.kotlin.js.backend.ast.*
 import org.jetbrains.kotlin.util.OperatorNameConventions
@@ -339,8 +338,6 @@ class IrElementToJsExpressionTransformer : BaseIrElementToJsNodeTransformer<JsEx
 
         if (simpleFunction.isSuspend) return false
 
-        if (receiverType is IrDynamicType) return call.origin == IrStatementOrigin.INVOKE
-
         return simpleFunction.name == OperatorNameConventions.INVOKE && receiverType.isFunctionTypeOrSubtype()
     }
 }