VideoConfig: Remove manual panic alert setting load

This code hadn't been touched since 2010. Nowadays, the panic alert
setting is loaded by ConfigManager and applied in UICommon.
VideoConfig has no business messing with it.

Source/Core/VideoCommon/VideoConfig.cpp

@@ -159,14 +159,6 @@ void VideoConfig::Refresh()
     }
   }
 
-  // Load common settings
-  IniFile iniFile;
-  iniFile.Load(File::GetUserPath(F_DOLPHINCONFIG_IDX));
-  IniFile::Section* interface = iniFile.GetOrCreateSection("Interface");
-  bool bTmp;
-  interface->Get("UsePanicHandlers", &bTmp, true);
-  SetEnableAlert(bTmp);
-
   VerifyValidity();
 }