Utils: Merge FileUtils::removeRecursively() into FilePath

This simplify the interface by removing a possibly wrong choice
ensures it works also on remote paths.

Change-Id: I01e198958900a91b99dcf2dbb491a593485493ba
Reviewed-by: David Schulz <david.schulz@qt.io>

src/plugins/android/androidpackageinstallationstep.cpp

@@ -137,7 +137,7 @@ void AndroidPackageInstallationStep::doRun()
         FilePath androidDir = FilePath::fromString(dir);
         if (!dir.isEmpty() && androidDir.exists()) {
             emit addOutput(tr("Removing directory %1").arg(dir), OutputFormat::NormalMessage);
-            if (!FileUtils::removeRecursively(androidDir, &error)) {
+            if (!androidDir.removeRecursively(&error)) {
                 emit addOutput(error, OutputFormat::Stderr);
                 TaskHub::addTask(BuildSystemTask(Task::Error, error));
                 emit finished(false);