fix(api): remove unused decryptSecret import and eslint-disable directives

Fixes lint error exposed by merge with main (GRO-392 PR #214)

Co-Authored-By: Paperclip <noreply@paperclip.ing>

apps/api/src/routes/admin/authProvider.ts

@@ -1,7 +1,7 @@
 import { Hono } from "hono";
 import { zValidator } from "@hono/zod-validator";
 import { z } from "zod/v3";
-import { eq, getDb, authProviderConfig, encryptSecret, decryptSecret } from "@groombook/db";
+import { eq, getDb, authProviderConfig, encryptSecret } from "@groombook/db";
 import { requireSuperUser } from "../../middleware/rbac.js";
 
 export const authProviderRouter = new Hono();