removed unnecessary comments

src/Avalonia.Base/Input/GestureRecognizers/ScrollGestureRecognizer.cs

@@ -113,7 +113,7 @@ namespace Avalonia.Input.GestureRecognizers
                         _scrolling = true;
                     if (_scrolling)
                     {
-                        _velocityTracker = new VelocityTracker(); // TODO: Should be platform specific -- this default tracker is for Android.
+                        _velocityTracker = new VelocityTracker();
                         
                         // Correct _trackedRootPoint with ScrollStartDistance, so scrolling does not start with a skip of ScrollStartDistance
                         _trackedRootPoint = new Point(

src/Avalonia.Base/Input/GestureRecognizers/VelocityTracker.cs

@@ -1,40 +1,13 @@
 // Code in this file is derived from
 // https://github.com/flutter/flutter/blob/master/packages/flutter/lib/src/gestures/velocity_tracker.dart
 
-//Copyright 2014 The Flutter Authors. All rights reserved.
-
-//Redistribution and use in source and binary forms, with or without modification,
-//are permitted provided that the following conditions are met:
-
-//    * Redistributions of source code must retain the above copyright
-//      notice, this list of conditions and the following disclaimer.
-//    * Redistributions in binary form must reproduce the above
-//      copyright notice, this list of conditions and the following
-//      disclaimer in the documentation and/or other materials provided
-//      with the distribution.
-//    * Neither the name of Google Inc. nor the names of its
-//      contributors may be used to endorse or promote products derived
-//      from this software without specific prior written permission.
-
-//THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
-//ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
-//WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-//DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
-//ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
-//(INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
-//LOSS OF USE, DATA, OR PROFITS;
-//OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
-//ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
-//(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
-//SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
 using System;
 using System.Diagnostics;
 using Avalonia.Utilities;
 
 namespace Avalonia.Input.GestureRecognizers
 {
-    // TODO: add 'IOSScrollViewFlingVelocityTracker' and 'MacOSScrollViewFlingVelocityTracker'?
+    // Possible enhancement: add Flutter's 'IOSScrollViewFlingVelocityTracker' and 'MacOSScrollViewFlingVelocityTracker'?
 
     public readonly record struct Velocity(Vector PixelsPerSecond)
     {
@@ -92,7 +65,7 @@ namespace Avalonia.Input.GestureRecognizers
         private const int HistorySize = 20;
         private const int HorizonMilliseconds = 100;
         private const int MinSampleSize = 3;
-        private const double MinFlingVelocity = 50.0; // Logical pixels / second (defined in flutter\lib\src\gesture\constants.dart)
+        private const double MinFlingVelocity = 50.0; // Logical pixels / second
         private const double MaxFlingVelocity = 8000.0;
 
         private readonly PointAtTime[] _samples = new PointAtTime[HistorySize];