adaptive: MovingAverage: fix template-id warning

    In file included from ../../modules/demux/adaptive/logic/RateBasedAdaptationLogic.h:29,
                     from ../../modules/demux/adaptive/logic/RateBasedAdaptationLogic.cpp:28:
    ../../modules/demux/adaptive/logic/../tools/MovingAverage.hpp:32:33: warning: template-id not allowed for constructor in C++20 [-Wtemplate-id-cdtor]
       32 |             MovingAverageSum<T>(T i): sum(0), prev(i) { }
          |                                 ^
    ../../modules/demux/adaptive/logic/../tools/MovingAverage.hpp:32:33: note: remove the ‘< >’

modules/demux/adaptive/tools/MovingAverage.hpp

@@ -29,7 +29,7 @@ namespace adaptive
     class MovingAverageSum
     {
         public:
-            MovingAverageSum<T>(T i): sum(0), prev(i) { }
+            MovingAverageSum(T i): sum(0), prev(i) { }
             void operator()(T n) {
                 sum += (n > prev) ? n - prev : prev - n;
                 prev = n;