Git: Remove assert

It is save to remove this assert as runCommand handles another command
being in flight already.

Change-Id: I8b7f1a9b8f3418def1a97f165ef6bdb9b03de04e
Reviewed-by: Jarek Kobus <jaroslaw.kobus@theqtcompany.com>

src/plugins/git/gitclient.cpp

@@ -361,8 +361,6 @@ private:
 
 void ShowController::reload()
 {
-    QTC_ASSERT(m_state == Idle, return);
-
     QStringList args;
     args << QLatin1String("show") << QLatin1String("-s") << QLatin1String(noColorOption)
               << QLatin1String(decorateOption) << m_id;