Try to fix the enterprise build of the iOS app

LaunchScreen.xib compiles locally with Xcode 8.1 but the enterprise
build fails. A possibility is that the enterprise build machine is
running an older Xcode version.

ios/app/Base.lproj/LaunchScreen.xib

@@ -1,32 +1,22 @@
-<?xml version="1.0" encoding="UTF-8"?>
-<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="11542" systemVersion="16B2555" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES">
-    <device id="retina4_7" orientation="portrait">
-        <adaptation id="fullscreen"/>
-    </device>
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="3.0" toolsVersion="7702" systemVersion="14D136" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES">
     <dependencies>
         <deployment identifier="iOS"/>
-        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11524"/>
-        <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+        <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="7701"/>
     </dependencies>
     <objects>
         <placeholder placeholderIdentifier="IBFilesOwner" id="-1" userLabel="File's Owner"/>
         <placeholder placeholderIdentifier="IBFirstResponder" id="-2" customClass="UIResponder"/>
-        <view userInteractionEnabled="NO" contentMode="scaleToFill" id="iN0-l3-epB">
+        <view contentMode="scaleToFill" id="iN0-l3-epB">
             <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
             <subviews>
                 <imageView opaque="NO" userInteractionEnabled="NO" contentMode="center" fixedFrame="YES" image="LaunchScreen" translatesAutoresizingMaskIntoConstraints="NO" id="4B8-Xf-NDE">
                     <rect key="frame" x="0.0" y="0.0" width="480" height="480"/>
                     <autoresizingMask key="autoresizingMask" flexibleMinX="YES" flexibleMaxX="YES" flexibleMinY="YES" flexibleMaxY="YES"/>
-                    <accessibility key="accessibilityConfiguration">
-                        <accessibilityTraits key="traits" image="YES" notEnabled="YES"/>
-                    </accessibility>
                 </imageView>
             </subviews>
             <color key="backgroundColor" red="0.090196078431372548" green="0.62745098039215685" blue="0.85882352941176465" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
-            <accessibility key="accessibilityConfiguration">
-                <accessibilityTraits key="traits" notEnabled="YES"/>
-            </accessibility>
             <nil key="simulatedStatusBarMetrics"/>
             <freeformSimulatedSizeMetrics key="simulatedDestinationMetrics"/>
             <point key="canvasLocation" x="548" y="455"/>