fix: remove redundant validation fix

rhodecode/templates/base/vcs_settings.mako

@@ -307,8 +307,6 @@
 ##                <div class="label">
 ##                  <span class="help-block">${_('Use rebase instead of creating a merge commit when merging via web interface.')}</span>
 ##               </div>
-                ## Hidden field for commented-out setting to prevent validation errors
-                ${h.hidden('rhodecode_git_use_rebase_for_merging' + suffix, 'False')}
 
             <div class="checkbox">
                 ${h.checkbox('rhodecode_git_close_branch_before_merging' + suffix, 'True', **kwargs)}