(mysql): remove out-of-order wavoipToken migration

Delete prisma/mysql-migrations/1707735894523_add_wavoip_token_to_settings_table,
which executes before the initial `Setting` table is created and breaks fresh
MySQL installs. The later migration 20250214181954_add_wavoip_token_column
already adds the column correctly, so keeping only that directory guarantees a
clean deploy.

prisma/mysql-migrations/1707735894523_add_wavoip_token_to_settings_table/migration.sql

@@ -1,9 +0,0 @@
-/*
-  Warnings:
-
-  - A unique constraint covering the columns `[remoteJid,instanceId]` on the table `Chat` will be added. If there are existing duplicate values, this will fail.
-*/
-
--- AlterTable
-ALTER TABLE `Setting`
-  ADD COLUMN IF NOT EXISTS `wavoipToken` VARCHAR(100);