Remove support for mysql on arm32

template/apps/mysql.json

@@ -26,7 +26,6 @@
             "name": "TZ"
         }
     ],
-    "image_arm32": "mysql:latest",
     "image_arm64": "mysql:latest",
     "image_amd64": "mysql:latest",
     "logo": "https://raw.githubusercontent.com/pi-hosted/pi-hosted/master/images/mysql.png",