Merge copyrights

Signed-off-by: Michael Telatynski <[email protected]>

Author: t3chguy

src/utils/WidgetUtils.ts

@@ -1,8 +1,6 @@
 /*
-Copyright 2017 Vector Creations Ltd
-Copyright 2018 New Vector Ltd
 Copyright 2019 Travis Ralston
-Copyright 2020 The Matrix.org Foundation C.I.C.
+Copyright 2017 - 2020 The Matrix.org Foundation C.I.C.
 
 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.