Cleanup: apply "Use synthetic property access syntax"

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/CompletionUtils.kt

@@ -283,7 +283,7 @@ fun breakOrContinueExpressionItems(position: KtElement, breakOrContinue: String)
                     result.add(createKeywordElement(breakOrContinue))
                 }
 
-                val label = (parent.getParent() as? KtLabeledExpression)?.getLabelNameAsName()
+                val label = (parent.parent as? KtLabeledExpression)?.getLabelNameAsName()
                 if (label != null) {
                     result.add(createKeywordElement(breakOrContinue, tail = label.labelNameToTail()))
                 }

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/handlers/WithExpressionPrefixInsertHandler.kt

@@ -45,7 +45,7 @@ class WithExpressionPrefixInsertHandler(val prefix: String) : InsertHandler<Look
             var parent = expression.getParent()
             if (parent is KtCallExpression && expression == parent.calleeExpression) {
                 expression = parent
-                parent = parent.getParent()
+                parent = parent.parent
             }
             if (parent is KtDotQualifiedExpression && expression == parent.selectorExpression) {
                 expression = parent

idea/idea-completion/src/org/jetbrains/kotlin/idea/completion/smart/SmartCompletion.kt

@@ -127,7 +127,7 @@ class SmartCompletion(
             }
 
             is KtWhenConditionWithExpression -> {
-                val entry = parent.getParent() as KtWhenEntry
+                val entry = parent.parent as KtWhenEntry
                 val whenExpression = entry.parent as KtWhenExpression
                 val subject = whenExpression.subjectExpression ?: return@lazy emptySet()