VCS: Remove unused local variables

Change-Id: I72076d632ffd0b49e9e54dab27368a43787a36a3
Reviewed-by: Tobias Hunger <tobias.hunger@digia.com>

src/plugins/cvs/cvsutils.cpp

@@ -82,9 +82,6 @@ QList<CvsLogEntry> parseLogEntries(const QString &o,
     ParseState state = FileState;
 
     const QString workingFilePrefix = QLatin1String("Working file: ");
-    const QString revisionPrefix = QLatin1String("revision ");
-    const QString statusPrefix = QLatin1String("date: ");
-    const QString commitId = QLatin1String("commitid: ");
     QRegExp statusPattern = QRegExp(QLatin1String("^date: ([\\d\\-]+) .*commitid: ([^;]+);$"));
     QRegExp revisionPattern = QRegExp(QLatin1String("^revision ([\\d\\.]+)$"));
     const QChar slash = QLatin1Char('/');

src/plugins/perforce/perforceplugin.cpp

@@ -719,7 +719,6 @@ void PerforcePlugin::annotate(const QString &workingDir,
     if (!result.error) {
         if (lineNumber < 1)
             lineNumber = VcsBase::VcsBaseEditorWidget::lineNumberOfCurrentEditor();
-        const QFileInfo fi(fileName);
         Core::IEditor *ed = showOutputInEditor(tr("p4 annotate %1").arg(id),
                                                result.stdOut, VcsBase::AnnotateOutput,
                                                source, codec);

src/plugins/subversion/subversionplugin.cpp

@@ -938,7 +938,6 @@ void SubversionPlugin::describe(const QString &source, const QString &changeNr)
 
     // Re-use an existing view if possible to support
     // the common usage pattern of continuously changing and diffing a file
-    const QString id = diffArg + source;
     const QString tag = VcsBase::VcsBaseEditorWidget::editorTag(VcsBase::DiffOutput, source, QStringList(), changeNr);
     if (Core::IEditor *editor = VcsBase::VcsBaseEditorWidget::locateEditorByTag(tag)) {
         editor->document()->setContents(description.toUtf8());