Remove unused tlsConfig variable

dashboard/src/components/DomainDialog.vue

@@ -30,7 +30,6 @@ const tlsProvider = ref('letsencrypt-prod-wildcard');
 const showAdvanced = ref(false);
 const customNameservers = ref(false);
 const dnsConfig = ref({});
-const tlsConfig = ref({});
 
 const isFormValid = ref(false);
 function checkValidity() {
@@ -77,7 +76,6 @@ defineExpose({
     provider.value = d.provider || '';
     dnsConfig.value = d.config;
     tlsProvider.value = d.tlsConfig.provider || 'letsencrypt-prod-wildcard';
-    tlsConfig.value = d.tlsConfig;
 
     busy.value = false;
     showAdvanced.value = false;