Remove useless action (#3365)

The cancel action was not wired. There is no value to have such thing

app/views/configure/integration.phtml

@@ -64,7 +64,6 @@
 		<div class="form-group form-actions">
 			<div class="group-controls">
 				<button type="submit" class="btn btn-important"><?= _t('gen.action.submit') ?></button>
-				<button type="reset" class="btn"><?= _t('gen.action.cancel') ?></button>
 			</div>
 		</div>
 	</form>