[IR] Remove files parameter from IrModuleFragmentImpl

This commit removes the default parameter in constructor,
as well as custom logic in this class, which would
make it harder for its subsequent auto-generation.

^KT-65773 In Progress

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/BasicIrModuleDeserializer.kt

@@ -96,7 +96,7 @@ abstract class BasicIrModuleDeserializer(
         error("No file for ${idSig.topLevelSignature()} (@ $idSig) in module $moduleDescriptor")
     }
 
-    override val moduleFragment: IrModuleFragment = IrModuleFragmentImpl(moduleDescriptor, linker.builtIns, emptyList())
+    override val moduleFragment: IrModuleFragment = IrModuleFragmentImpl(moduleDescriptor, linker.builtIns)
 
     private fun deserializeIrFile(
         fileProto: ProtoFile, file: IrFile, fileReader: IrLibraryFileFromBytes,