remove updateDDO function

src/aquarius/Aquarius.ts

@@ -215,40 +215,6 @@ export class Aquarius {
         return this.retrieveDDO(undefined, metadataServiceEndpoint)
     }
 
-    /**
-     * Updates a DDO.
-     * @param  {DID | string} did DID of the asset to update.
-     * @param  {DDO} newDdo New DDO of the asset.
-     * @return {Promise<DDO>} Updated DDO of the asset.
-     */
-    public async updateDDO(did: DID | string, newDdo: DDO): Promise<DDO> {
-        did = did && DID.parse(did)
-        const fullUrl = `${this.url}${apiPath}/${did.getDid()}`
-        const result = await this.fetch
-            .put(fullUrl, DDO.serialize(newDdo))
-            .then((response: any) => {
-                if (response.ok) {
-                    return response.json()
-                }
-                this.logger.log(
-                    'updateDDO failed:',
-                    response.status,
-                    response.statusText,
-                    did
-                )
-                return null as DDO
-            })
-            .then((response: DDO) => {
-                return new DDO(response) as DDO
-            })
-            .catch(error => {
-                this.logger.error('Error updating metadata: ', error)
-                return null as DDO
-            })
-
-        return result
-    }
-
     /**
      * Transfer ownership of a DDO
      * @param  {DID | string} did DID of the asset to update.