fix: simplify verbiage for batch execution panel

tailbone/templates/batch/view.mako

@@ -85,13 +85,11 @@
       <div style="display: flex; flex-direction: column; gap: 0.5rem;">
       % if batch.executed:
           <p>
-            Batch was executed
             ${h.pretty_datetime(request.rattail_config, batch.executed)}
             by ${batch.executed_by}
           </p>
       % elif master.handler.executable(batch):
           % if master.has_perm('execute'):
-              <p>Batch has not yet been executed.</p>
               <b-button type="is-primary"
                         % if not execute_enabled:
                         disabled