get control container from control container makes no sense (#4898)

Co-authored-by: Dennis Hernández <dennishernandezvargas@gmail.com>

src/extensions/filter-control/bootstrap-table-filter-control.js

@@ -632,7 +632,7 @@ $.BootstrapTable = class extends $.BootstrapTable {
           const $controlContainer = UtilsFilterControl.getControlContainer(that)
           if (
             $controlContainer.find('select').length > 0 ||
-            $controlContainer.getControlContainer(that).find('input').length > 0
+            $controlContainer.find('input').length > 0
           ) {
             return
           }