Git: Remove unused variable

Change-Id: If7656e0938380714bff655c80e6d0082a427ef71
Reviewed-by: André Hartmann <aha_1980@gmx.de>
Reviewed-by: Orgad Shaneh <orgads@gmail.com>

src/plugins/git/gitclient.cpp

@@ -1395,7 +1395,6 @@ void GitClient::branchesForCommit(const QString &revision)
                 workingDirectory, {"branch", noColorOption, "-a", "--contains", revision}, nullptr,
                 false, 0, workingDirectory);
     connect(command, &VcsCommand::stdOutText, controller, [controller](const QString &text) {
-        QHash<QString, QStringList> remotes;
         const QString remotePrefix = "remotes/";
         const QString localPrefix = "<Local>";
         const int prefixLength = remotePrefix.length();