InCall: remove blue outline on mute and speaker buttons

Signal/src/view controllers/InCallViewController.m

@@ -165,10 +165,6 @@ static NSInteger connectingFlashCounter = 0;
 }
 
 - (void)setupButtonBorders {
-    _muteButton.layer.borderColor		= [UIUtil blueColor].CGColor;
-    _speakerButton.layer.borderColor	= [UIUtil blueColor].CGColor;
-    _muteButton.layer.borderWidth		= BUTTON_BORDER_WIDTH;
-    _speakerButton.layer.borderWidth	= BUTTON_BORDER_WIDTH;
 
     if (_potentiallyKnownContact) {
 

Signal/src/view controllers/xibs/CallAudioManagerDemo.xib

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="UTF-8"?>
 <archive type="com.apple.InterfaceBuilder3.CocoaTouch.XIB" version="8.00">
 	<data>
-		<int key="IBDocument.SystemTarget">1792</int>
+		<int key="IBDocument.SystemTarget">2048</int>
 		<string key="IBDocument.SystemVersion">14A388a</string>
 		<string key="IBDocument.InterfaceBuilderVersion">6250</string>
 		<string key="IBDocument.AppKitVersion">1343.14</string>

Signal/src/view controllers/xibs/DialerViewController.xib

@@ -804,7 +804,7 @@
                     </connections>
                 </button>
             </subviews>
-            <color key="backgroundColor" white="0.0" alpha="0.0" colorSpace="calibratedWhite"/>
+            <color key="backgroundColor" white="1" alpha="1" colorSpace="calibratedWhite"/>
             <constraints>
                 <constraint firstItem="m52-xI-oom" firstAttribute="top" secondItem="82K-Nd-cmI" secondAttribute="bottom" constant="-1" id="0Pc-SZ-dLd"/>
                 <constraint firstItem="T7H-JR-Beb" firstAttribute="leading" secondItem="YQD-uu-VVV" secondAttribute="leading" id="1ZM-3u-VBg"/>