Remove unused code

Author: Prince Rachit Sinha

.werft/util/certs.ts

@@ -9,7 +9,6 @@ export class IssueCertificateParams {
     dnsZoneDomain: string
     domain: string
     ip: string
-    // additionalWsSubdomains: string[]
     additionalSubdomains: string[]
     includeBaseDomain: boolean
     pathToKubeConfig: string
@@ -25,10 +24,6 @@ export class InstallCertificateParams {
     destinationNamespace: string
 }
 
-function getDefaultSubDomains(): string[] {
-    return [""];
-}
-
 export async function issueCertficate(werft, params: IssueCertificateParams) {
     var subdomains = [];
     werft.log("certificate", `Subdomains: ${params.additionalSubdomains}`)