remove the fix for a bug that disappeared, fixing monoscoping rendering

Source/DisplayCluster/Private/Render/Devices/Monoscopic/DisplayClusterDeviceMonoscopicOpenGL.cpp

@@ -51,9 +51,8 @@ bool FDisplayClusterDeviceMonoscopicOpenGL::Present(int32& InOutSyncInterval)
 {
 	UE_LOG(LogDisplayClusterRender, Verbose, TEXT("FDisplayClusterDeviceQuadBufferStereoOpenGL::Present"));
 
-	const int halfSizeX = BackBuffSize.X / 2;
 	const int dstX1 = 0;
-	const int dstX2 = halfSizeX;
+	const int dstX2 = BackBuffSize.X;
 
 	// Convert to left bottom origin and flip Y
 	const int dstY1 = ViewportSize.Y;
@@ -76,7 +75,7 @@ bool FDisplayClusterDeviceMonoscopicOpenGL::Present(int32& InOutSyncInterval)
 	glReadBuffer(GL_COLOR_ATTACHMENT0);
 
 	glBlitFramebuffer(
-		0, 0, halfSizeX, BackBuffSize.Y,
+		0, 0, BackBuffSize.X, BackBuffSize.Y,
 		dstX1, dstY1, dstX2, dstY2,
 		GL_COLOR_BUFFER_BIT,
 		GL_NEAREST);