Revert "K2/Java: add private enum constructor for MPP matching"

Review: https://jetbrains.team/p/kt/reviews/13368/timeline

This reverts commit 2cea2b9098.

Motivation:
KT-62961 was fixed independently by two different commits:
- ac3d8ad3ac
- 2cea2b9098

If possible, it's better not to introduce implicit declarations.
That's why it was agreed to keep
ac3d8ad3ac and revert
2cea2b9098

compiler/fir/java/src/org/jetbrains/kotlin/fir/java/FirJavaFacade.kt

@@ -361,22 +361,11 @@ abstract class FirJavaFacade(
                 )
                 generateValueOfFunction(moduleData, classId.packageFqName, classId.relativeClassName)
                 generateEntriesGetter(moduleData, classId.packageFqName, classId.relativeClassName)
-                if (javaClassDeclaredConstructors.isEmpty()) {
-                    declarations += buildSyntheticConstructorForJavaClass(
-                        javaClass,
-                        classKind,
-                        constructorId = constructorId,
-                        ownerClassBuilder = this,
-                        valueParametersForAnnotationConstructor = null,
-                        moduleData = moduleData,
-                    )
-                }
             }
             if (classIsAnnotation) {
                 declarations +=
-                    buildSyntheticConstructorForJavaClass(
+                    buildConstructorForAnnotationClass(
                         javaClass,
-                        classKind,
                         constructorId = constructorId,
                         ownerClassBuilder = this,
                         valueParametersForAnnotationConstructor = valueParametersForAnnotationConstructor,
@@ -687,12 +676,11 @@ abstract class FirJavaFacade(
         }
     }
 
-    private fun buildSyntheticConstructorForJavaClass(
+    private fun buildConstructorForAnnotationClass(
         javaClass: JavaClass,
-        classKind: ClassKind,
         constructorId: CallableId,
         ownerClassBuilder: FirJavaClassBuilder,
-        valueParametersForAnnotationConstructor: ValueParametersForAnnotationConstructor?,
+        valueParametersForAnnotationConstructor: ValueParametersForAnnotationConstructor,
         moduleData: FirModuleData,
     ): FirJavaConstructor {
         return buildJavaConstructor {
@@ -700,12 +688,11 @@ abstract class FirJavaFacade(
             this.moduleData = moduleData
             isFromSource = javaClass.isFromSource
             symbol = FirConstructorSymbol(constructorId)
-            val visibility = if (classKind == ClassKind.ENUM_CLASS) Visibilities.Private else Visibilities.Public
-            status = FirResolvedDeclarationStatusImpl(visibility, Modality.FINAL, EffectiveVisibility.Public)
+            status = FirResolvedDeclarationStatusImpl(Visibilities.Public, Modality.FINAL, EffectiveVisibility.Public)
             returnTypeRef = buildResolvedTypeRef {
                 type = ownerClassBuilder.buildSelfTypeRef()
             }
-            valueParametersForAnnotationConstructor?.forEach { _, firValueParameter -> valueParameters += firValueParameter }
+            valueParametersForAnnotationConstructor.forEach { _, firValueParameter -> valueParameters += firValueParameter }
             isInner = false
             isPrimary = true
             annotationBuilder = { emptyList() }