Fix warning: "Unused non-trivial variable"

[-Wclazy-unused-non-trivial-variable]

Change-Id: Ia99c3de31fd92205f25624ab60e60370c1aa4538
Reviewed-by: Orgad Shaneh <orgads@gmail.com>
Reviewed-by: hjk <hjk@qt.io>

src/libs/ssh/sftptransfer.cpp

@@ -162,7 +162,6 @@ void SftpTransfer::doStart()
             QFileInfo fi(f.sourceFile);
             if (fi.isSymLink()) {
                 link = true;
-                const QString target = fi.dir().relativeFilePath(fi.symLinkTarget()); // see QTBUG-5817.
                 d->batchFile.write("-rm " + QtcProcess::quoteArgUnix(f.targetFile).toLocal8Bit()
                                    + '\n');
             }