IR: remove field fake overrides

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

@@ -1234,7 +1234,6 @@ abstract class IrFileDeserializer(val logger: LoggingContext, val builtIns: IrBu
                     flags.isFinal,
                     flags.isExternal,
                     flags.isStatic,
-                    flags.isFakeOverride
                 )
             }.usingParent {
                 if (proto.hasInitializer())

compiler/ir/serialization.common/src/org/jetbrains/kotlin/backend/common/serialization/IrFlags.java

@@ -69,15 +69,13 @@ public class IrFlags extends Flags {
             ProtoBuf.Visibility visibility,
             boolean isFinal,
             boolean isExternal,
-            boolean isStatic,
-            boolean isFakeOverride
+            boolean isStatic
     ) {
         return HAS_ANNOTATIONS.toFlags(hasAnnotations)
                | VISIBILITY.toFlags(visibility)
                | IS_FINAL.toFlags(isFinal)
                | IS_EXTERNAL_FIELD.toFlags(isExternal)
                | IS_STATIC.toFlags(isStatic)
-               | IS_FAKE_OVERRIDE.toFlags(isFakeOverride)
                 ;
     }
 

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

@@ -191,13 +191,12 @@ inline class FieldFlags(val flags: Long) {
     val isFinal: Boolean get() = IrFlags.IS_FINAL.get(flags.toInt())
     val isExternal: Boolean get() = IrFlags.IS_EXTERNAL_FIELD.get(flags.toInt())
     val isStatic: Boolean get() = IrFlags.IS_STATIC.get(flags.toInt())
-    val isFakeOverride: Boolean get() = IrFlags.IS_FAKE_OVERRIDE.get(flags.toInt())
 
     companion object {
         fun encode(field: IrField): Long {
             return field.run {
                 val visibility = ProtoEnumFlags.visibility(visibility)
-                IrFlags.getFieldFlags(annotations.isNotEmpty(), visibility, isFinal, isExternal, isStatic, isFakeOverride).toLong()
+                IrFlags.getFieldFlags(annotations.isNotEmpty(), visibility, isFinal, isExternal, isStatic).toLong()
             }
         }