DATV demod: removed stray call to DATVDemod::stop() in GUI destructor. Fixes #827

plugins/channelrx/demoddatv/datvdemodgui.cpp

@@ -268,7 +268,6 @@ DATVDemodGUI::DATVDemodGUI(PluginAPI* objPluginAPI, DeviceUISet *deviceUISet, Ba
 
 DATVDemodGUI::~DATVDemodGUI()
 {
-    m_objDATVDemod->stop();
     m_objDATVDemod->SetTVScreen(nullptr);
     m_objDATVDemod->setMERLabel(nullptr);
     m_objDATVDemod->setCNRLabel(nullptr);