RDKEMW-14121 : Added Mediatek Platform support in Memcapture Code Base (#15)

Reason of Change: removed the reduntant GetGpuMemoryUsageMediatek
function to avoid the MTk build compilation error

Author: tabbas651

MemoryMetric.h

@@ -69,8 +69,6 @@ class MemoryMetric : public IMetric
 
     void GetGpuMemoryUsageMediatek();
 
-    void GetGpuMemoryUsageMediatek();
-
     void GetGpuMemoryUsageRealtek();
 
     pid_t tidToParentPid(pid_t tid);