Replace deprecated annotations with modifiers in testData

idea/testData/quickfix/migration/missingConstructorKeyword/manyFilesMuitliple.after.kt

@@ -9,7 +9,7 @@ class A @Ann(1)private constructor(x: Int) {
     inner class B() // do not insert here
     inner class C        protected constructor() {
         fun foo() {
-            @data class Local private constructor()
+            data class Local private constructor()
         }
     }
 }

idea/testData/quickfix/migration/missingConstructorKeyword/manyFilesMuitliple.before.Main.kt

@@ -9,7 +9,7 @@ class A @Ann(1)<caret>private (x: Int) {
     inner class B() // do not insert here
     inner class C        protected                () {
         fun foo() {
-            @data class Local private()
+            data class Local private()
         }
     }
 }