[IR BE] Rename IrModuleSerializer -> IrFileSerializer

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

@@ -123,7 +123,7 @@ import org.jetbrains.kotlin.backend.common.serialization.proto.TypeArguments as
 import org.jetbrains.kotlin.backend.common.serialization.proto.Visibility as ProtoVisibility
 import org.jetbrains.kotlin.backend.common.serialization.proto.FqName as ProtoFqName
 
-open class IrModuleSerializer(
+open class IrFileSerializer(
     val logger: LoggingContext,
     val declarationTable: DeclarationTable,
     val mangler: KotlinMangler,
@@ -137,13 +137,11 @@ open class IrModuleSerializer(
     // The same symbol can be used multiple times in a module
     // so use this index to store symbol data only once.
     var protoSymbolMap = mutableMapOf<IrSymbol, Int>()
-//    var protoSymbolMap = mutableMapOf<IrSymbol, Pair<UniqId, ProtoSymbolData>>()
     var protoSymbolArray = arrayListOf<ProtoSymbolData>()
 
     // The same type can be used multiple times in a module
     // so use this index to store type data only once.
     var protoTypeMap = mutableMapOf<IrTypeKey, Int>()
-//    val protoTypeMap = mutableMapOf<IrTypeKey, Pair<Long, ProtoType>>()
     var protoTypeArray = arrayListOf<ProtoType>()
 
     var protoStringMap = mutableMapOf<String, Int>()
@@ -168,8 +166,6 @@ open class IrModuleSerializer(
         }
     }
 
-
-
     private fun serializeIrExpressionBody(expression: IrExpression): ProtoBodyIndex {
         val proto = ProtoBodyIndex.newBuilder()
         protoBodyArray.add(XStatementOrExpression.XExpression(serializeExpression(expression)))
@@ -1372,8 +1368,4 @@ open class IrModuleSerializer(
             topLevelDeclarations
         )
     }
-
-    fun serializedIrModule(module: IrModuleFragment): SerializedIrModule {
-        return SerializedIrModule(module.files.filter { it.packageFragmentDescriptor !is FunctionInterfacePackageFragment }.map { serializeIrFile(it) })
-    }
 }