Remove synthetic flag from internal members

compiler/backend/src/org/jetbrains/kotlin/codegen/AsmUtil.java

@@ -214,7 +214,6 @@ public class AsmUtil {
         }
 
         if (JetTypeMapper.isAccessor(functionDescriptor)
-            || functionDescriptor.getVisibility() == Visibilities.INTERNAL
             || AnnotationUtilKt.hasJvmSyntheticAnnotation(functionDescriptor)) {
             flags |= ACC_SYNTHETIC;
         }

compiler/backend/src/org/jetbrains/kotlin/codegen/PropertyCodegen.java

@@ -337,10 +337,6 @@ public class PropertyCodegen {
             modifiers |= ACC_PRIVATE;
         }
 
-        if (propertyDescriptor.getVisibility() == Visibilities.INTERNAL) {
-            modifiers |= ACC_SYNTHETIC;
-        }
-
         if (AsmUtil.isPropertyWithBackingFieldCopyInOuterClass(propertyDescriptor)) {
             ImplementationBodyCodegen parentBodyCodegen = (ImplementationBodyCodegen) memberCodegen.getParentCodegen();
             parentBodyCodegen.addCompanionObjectPropertyToCopy(propertyDescriptor, defaultValue);