Remove an extra ' in the KeyboardEventKeyLocation deprecation message

Source/core/frame/UseCounter.cpp

Index: Source/core/frame/UseCounter.cpp
diff --git a/Source/core/frame/UseCounter.cpp b/Source/core/frame/UseCounter.cpp
index d4266e4150a412fb8adc3e6cc47e012d52a76c92..cd883f643762d9c817da07a98fc26117fd168887 100644
--- a/Source/core/frame/UseCounter.cpp
+++ b/Source/core/frame/UseCounter.cpp
@@ -653,7 +653,7 @@ String UseCounter::deprecationMessage(Feature feature)
 
     // Keyboard Event (DOM Level 3)
     case KeyboardEventKeyLocation:
-        return "'KeyboardEvent.keyLocation'' is deprecated. Please use 'KeyboardEvent.location' instead.";
+        return "'KeyboardEvent.keyLocation' is deprecated. Please use 'KeyboardEvent.location' instead.";
 
     case CaptureEvents:
         return "captureEvents() is deprecated. This method doesn't do anything.";