fixed log warning

NavigationStackDemo/Base.lproj/Main.storyboard

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="9532" systemVersion="15D21" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="wMY-lE-9QR">
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="10116" systemVersion="15E65" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" initialViewController="wMY-lE-9QR">
     <dependencies>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="9530"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="10085"/>
         <capability name="Constraints to layout margins" minToolsVersion="6.0"/>
     </dependencies>
     <customFonts key="customFonts">
@@ -269,11 +269,7 @@
                         </connections>
                     </tableView>
                     <toolbarItems/>
-                    <navigationItem key="navigationItem" id="Avt-G1-zNd">
-                        <userDefinedRuntimeAttributes>
-                            <userDefinedRuntimeAttribute type="boolean" keyPath="displaysSearchBarInNavigationBar" value="YES"/>
-                        </userDefinedRuntimeAttributes>
-                    </navigationItem>
+                    <navigationItem key="navigationItem" id="Avt-G1-zNd"/>
                     <connections>
                         <outlet property="search" destination="w8B-dB-9wA" id="nwS-76-4cb"/>
                         <segue destination="iaH-ZQ-ay5" kind="show" identifier="push" id="HYI-Ga-o9f"/>