remove dead code and deprecate option

Author: baileympearson

src/db.ts

@@ -394,7 +394,6 @@ export class Db {
         toCollection,
         resolveOptions(undefined, {
           ...options,
-          new_collection: true,
           readPreference: ReadPreference.primary
         })
       ) as TODO_NODE_3286

src/operations/rename.ts

@@ -11,7 +11,12 @@ import { Aspect, defineAspects } from './operation';
 export interface RenameOptions extends Omit<CommandOperationOptions, 'rawData'> {
   /** Drop the target name collection if it previously exists. */
   dropTarget?: boolean;
-  /** Unclear */
+  /**
+   * @deprecated
+   *
+   * This option has been dead code since at least Node driver version 4.x.  It will
+   * be removed in a future major release.
+   */
   new_collection?: boolean;
 }