Partially revert "Add workflow menu button to thread lists"

This reverts commit 1e10d199a6171f88da129505977bf6ae69c2c362.

Reason for revert: we'll use Lit instead of Vue.js.

The following parts have not been reverted:

- The inject_workflows_menubtn string in the
  src/static/_locales/en/messages.json file, since it will be used again
  in the future, and this might cause the string translations to be
  deleted from Pontoon.
- A minor CSS fix for the padding of .TWPT-btn--with-badge in
  src/static/css/common/console.css.

Bug: twpowertools:115
Change-Id: I099e06d9964b2a5fb4e43baeef1a8fe07fe52043
diff --git a/src/static/css/ccdarktheme.css b/src/static/css/ccdarktheme.css
index e1a5089..04e2754 100644
--- a/src/static/css/ccdarktheme.css
+++ b/src/static/css/ccdarktheme.css
@@ -38,7 +38,7 @@
   color: var(--TWPT-primary-text);
 }
 
-body.ec a:not(.mdc-list-item) {
+body.ec a {
   color: var(--TWPT-link);
 }