test_result: remove button to hide expected failures from Zelenium tests

ERP5 now produces the results with `<details>` HTML elements, so this
hack is no longer necessary. It was anyway not working at all on ERP5JS
and not working well on erp5_xhtml_style
73 jobs for feat/zelenium_test_result in 0 seconds (queued for 3 seconds)
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner2

01:23:30

failed ERP5.UnitTest-TestRunner2

03:43:48

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:38:05

passed ERP5.CodingStyleTest-TestRunner2

01:19:14

passed ERP5.CodingStyleTest-TestRunner2

01:11:06

passed ERP5.CodingStyleTest-TestRunner2

01:10:51

passed ERP5.CodingStyleTest-TestRunner2

01:07:35

passed ERP5.CodingStyleTest-TestRunner2

00:56:15

failed ERP5.CodingStyleTest-TestRunner2

07:38:10

passed ERP5.CodingStyleTest-TestRunner2

05:10:22

passed ERP5.CodingStyleTest-TestRunner2

01:57:39

passed ERP5.CodingStyleTest-TestRunner2

01:06:33

passed ERP5.CodingStyleTest-TestRunner2

02:23:42

passed ERP5.CodingStyleTest-TestRunner2

02:16:07

passed ERP5.CodingStyleTest-TestRunner2

02:22:02

passed ERP5.CodingStyleTest-TestRunner2

01:04:41

passed ERP5.CodingStyleTest-TestRunner2

00:58:21

passed ERP5.CodingStyleTest-TestRunner2

00:38:05

passed ERP5.CodingStyleTest-TestRunner2

01:47:36

passed ERP5.CodingStyleTest-TestRunner2

00:57:34

passed ERP5.CodingStyleTest-TestRunner2

00:49:55

passed ERP5.CodingStyleTest-TestRunner2

01:03:44

passed ERP5.CodingStyleTest-TestRunner2

01:11:52

passed ERP5.CodingStyleTest-TestRunner2

00:53:27

passed ERP5.CodingStyleTest-TestRunner2

01:23:25

passed ERP5.CodingStyleTest-TestRunner2

02:26:50

passed ERP5.CodingStyleTest-TestRunner2

01:26:58

passed ERP5.UnitTest-TestRunner2

03:39:53

failed ERP5.UnitTest-TestRunner2

02:15:14

failed ERP5.UnitTest-TestRunner2

02:44:18

passed ERP5.UnitTest-TestRunner2

02:39:36

failed ERP5.UnitTest-TestRunner2

04:31:22

passed ERP5.UnitTest-TestRunner2

03:14:26

passed ERP5.UnitTest-TestRunner2

04:17:10

failed ERP5.UnitTest-TestRunner2

02:36:28

failed ERP5.UnitTest-TestRunner2

04:28:32

passed ERP5.UnitTest-TestRunner2

failed ERP5.UnitTest-TestRunner2

03:16:46

passed ERP5.UnitTest-TestRunner2

09:19:01

failed ERP5.UnitTest-TestRunner2

04:36:55

failed ERP5.UnitTest-TestRunner2

03:44:23

failed ERP5.UnitTest-TestRunner2

03:48:44

failed ERP5.UnitTest-TestRunner2

02:25:14

failed ERP5.UnitTest-TestRunner2

03:04:48

passed ERP5.UnitTest-TestRunner2

04:43:10

failed ERP5.UnitTest-TestRunner2

03:25:47

failed ERP5.UnitTest-TestRunner2

02:41:53

failed ERP5.UnitTest-TestRunner2

03:57:38

failed ERP5.UnitTest-TestRunner2

09:22:27

passed ERP5.UnitTest-TestRunner2

03:07:31

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:25:58

passed ERP5.UnitTest-Zope2-ForTestRunner2

03:17:25

failed ERP5.UnitTest-Zope2-ForTestRunner2

03:00:55

passed ERP5.UnitTest-Zope2-ForTestRunner2

03:47:41

passed ERP5.UnitTest-Zope2-ForTestRunner2

02:58:45

failed ERP5.UnitTest-Zope2-ForTestRunner2

03:30:21

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:24:46

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:57:31

passed ERP5.UnitTest-Zope2-ForTestRunner2

03:06:22

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:23:05

failed ERP5.UnitTest-Zope2-ForTestRunner2

01:43:27

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:32:11

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:45:56

failed ERP5.UnitTest-Zope2-ForTestRunner2

03:45:29

failed ERP5.UnitTest-Zope2-ForTestRunner2

03:44:31

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:37:36

failed ERP5.UnitTest-Zope2-ForTestRunner2

08:30:26

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:48:22

failed ERP5.UnitTest-Zope2-ForTestRunner2

04:14:54

failed ERP5.UnitTest-Zope2-ForTestRunner2

03:43:08

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:18:13

passed ERP5.UnitTest-Zope2-ForTestRunner2

08:41:53

failed ERP5.UnitTest-Zope2-ForTestRunner2

02:04:21