Drop the blank line left behind by the removed assertion

Taking the overflow assertion out of the width test left its block padded,
which @stylistic/padded-blocks rejects.

Co-Authored-By: Claude Opus 5 <noreply@anthropic.com>

e2e-tests/cypress/tests/integration/channels/interactive_dialog/grid_spec.js

@@ -301,7 +301,6 @@ describe('Interactive Dialog - Grid layout', () => {
             // * Typed values survive both resizes, because a width change is an
             // ordinary refresh
             cy.get('.apps-form-grid tbody tr').first().find('td input').first().should('have.value', '7');
-
         });
 
         closeAppsFormModal();