[ui] Remove the reset of the Spreadsheet options "Show only selected points"

This was reset to avoid the user opening VeloView and have an empty Spreadsheet.
The user prefer to conserve the option across session.

ApplicationComponents/lqSpreadSheetManager.cxx

@@ -29,11 +29,6 @@
 lqSpreadSheetManager::lqSpreadSheetManager(QObject* parent) : QObject(parent)
 {
   this->Settings = pqApplicationCore::instance()->settings();
-
-  // we disable the "show only selection" because otherwise if you quit LidarView with this option ON
-  // when you will open Lidarview again the Spreadsheet will be empty because no points are selected.
-  // This can be misleading for the user so we set this property to false on opening of lidarview
-  this->Settings->setValue("ShowOnlySelectedElement", false);
 }
 
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