docs: Put the ESLint plugin out of beta (#42127)

GitOrigin-RevId: f6c567b1d5526f6ec13f156fb0384de6acd9cbb2

Author: Nicolapps

npm-packages/docs/docs/eslint.mdx

@@ -7,8 +7,6 @@ description: ESLint rules for Convex
 ESLint rules for Convex functions enforce best practices. Let us know if there's
 a rule you would find helpful!
 
-<BetaAdmonition feature="Convex ESLint rules" verb="are" />
-
 ## Setup
 
 For ESLint 9 (flat config, using `eslint.config.js`), install the rules with:

npm-packages/docs/src/css/custom.css

@@ -982,22 +982,6 @@ html[data-theme="dark"] .convex-menu-header {
   margin-left: 0.8em;
 }
 
-.convex-sidebar-eslint .menu__link:after {
-  font-weight: 400;
-  font-size: 0.6em;
-  margin-left: 1em;
-  content: "Beta";
-  border-radius: 10px;
-  border: solid 1px gray;
-  padding: 2px 8px;
-  float: right;
-}
-
-.convex-sidebar-eslint .menu__link--active:after {
-  /* shift left to compensate for text to the left being bold */
-  margin-left: 0.88em;
-}
-
 .convex-sidebar-svelte {
   --convex-icon: url("../../static/img/sidebar-icons/svelte.svg");
 }