[FIX] website_blog: remove problematic test without cache

Since [this commit], the `test_10_perf_sql_blog_standard_data` test
failed randomly. As testing sql perf for website without cache doesn't
really make sense (as explained in [this other commit]) we can can just
remove the test without cache.

[this commit]: https://github.com/odoo/odoo/commit/88b016fdc407e318c43c96df9b582853512f04fa
[this other commit]: https://github.com/odoo/odoo/commit/dad8dca0da23143eb2f28debde5139e907368a2e

runbot-55755

closes odoo/odoo#162036

Signed-off-by: Romain Derie (rde) <rde@odoo.com>

addons/website_blog/tests/test_performance.py

@@ -46,7 +46,6 @@ class TestBlogPerformance(UtilPerf):
 
     def test_10_perf_sql_blog_standard_data(self):
         self.assertLessEqual(self._get_url_hot_query('/blog'), 11)
-        self.assertLessEqual(self._get_url_hot_query('/blog', cache=False), 23)
 
     def test_20_perf_sql_blog_bigger_data_scaling(self):
         BlogPost = self.env['blog.post']