Remove ApplicationLauncher::Mode

The actual remaining use was to pop up a terminal in some
setups where Mode == Console, with a default of Gui meaning
"no console". In some downstream uses it was used set to
Console (probably to mean "this helper process does not need
a gui") but then luckily ignored when actually starting the
helper processes.

All cases where the console is useful and requested are
nowadays RunWorkers belonging to RunConfigurations with
a TerminalAspect, so they can directly get the relevant bit
from their RunConfiguration without having it part of
all StandardRunnables.

Change-Id: I1368d5968da5cf672656aebf200ccac8d45335d0
Reviewed-by: Christian Stenger <christian.stenger@qt.io>

src/plugins/pythoneditor/pythoneditorplugin.cpp

@@ -299,7 +299,6 @@ Runnable PythonRunConfiguration::runnable() const
     QtcProcess::addArg(&r.commandLineArguments, mainScript());
     QtcProcess::addArgs(&r.commandLineArguments, extraAspect<ArgumentsAspect>()->arguments());
     r.executable = extraAspect<InterpreterAspect>()->value();
-    r.runMode = extraAspect<TerminalAspect>()->runMode();
     r.environment = extraAspect<EnvironmentAspect>()->environment();
     return r;
 }