Git: Do not show progress bar and the command on instant blame

Change-Id: I22d06d0359d82d086062be4990b51858754b9145
Reviewed-by: Jarek Kobus <jaroslaw.kobus@qt.io>

src/plugins/git/gitplugin.cpp

@@ -1581,7 +1581,7 @@ void GitPluginPrivate::instantBlame()
     };
     GitClient::instance()->vcsExecWithHandler(workingDirectory,
                            {"blame", "-p", "-L", lineString, "--", filePath.toString()},
-                           this, commandHandler);
+                           this, commandHandler, RunFlags::SuppressCommandLogging);
 }
 
 void GitPluginPrivate::stopInstantBlame()