refactor!: Remove iSql.connect() and iSql.setOptions()

These two functions were used in conjuction to use XMLSERVICE for user
authentication. The transports already handle this.

lib/Deprecated.js

@@ -150,24 +150,6 @@ class iSql {
     this.xml = '<sql>';
   }
 
-  /**
-   * @description adds sql connect XML
-   * @param {object} [options]
-   */
-  // eslint-disable-next-line class-methods-use-this
-  connect() {
-    throw new Error('As of v1.0, \'iSql.connect()\' has been removed');
-  }
-
-  /**
-   * @description adds sql options XML
-   * @param {object} options
-   */
-  // eslint-disable-next-line class-methods-use-this
-  setOptions() {
-    throw new Error('As of v1.0, \'iSql.setOptions()\' has been removed');
-  }
-
   /**
    * @description adds sql query XML
    * @param {string} stmt