[docsp-26162] Remove unsupported options (#463)

* initial

* rr suggestion

Author: mongoKart

source/code-snippets/transactions/txn-callback.js

@@ -33,7 +33,7 @@ async function setup(client) {
 
 async function queryData() {
   const uri = process.env.MONGODB_URI;
-  const client = new MongoClient(uri, { useUnifiedTopology: true });
+  const client = new MongoClient(uri);
   try {
     await Promise.all(['customers', 'inventory', 'orders'].map(async c => {
       const coll = client.db('testdb').collection(c);
@@ -91,7 +91,7 @@ async function placeOrder(client, session, cart, payment) {
 // end callback
 
 const uri = process.env.MONGODB_URI;
-const client = new MongoClient(uri, { useUnifiedTopology: true });
+const client = new MongoClient(uri);
 
 async function run() {
   /* Test code: uncomment block to run

source/code-snippets/transactions/txn-core.js

@@ -28,7 +28,7 @@ async function setup(client) {
 
 async function queryData() {
   const uri = process.env.MONGODB_URI;
-  const client = new MongoClient(uri, { useUnifiedTopology: true });
+  const client = new MongoClient(uri);
   try {
     await Promise.all(['customers', 'inventory', 'orders'].map(async c => {
       const coll = client.db('testdb').collection(c);
@@ -112,7 +112,7 @@ async function placeOrder(client, cart, payment) {
 
 async function run() {
   const uri = process.env.MONGODB_URI;
-  const client = new MongoClient(uri, { useNewUrlParser: true, useUnifiedTopology: true });
+  const client = new MongoClient(uri);
 
   await cleanUp(client);
   await setup(client);

source/fundamentals/crud/write-operations/pkFactory.txt

@@ -51,7 +51,6 @@ generate ``_id`` values of type ``uuid``:
    const { UUID } = require('bson');
    ...
    const client = new MongoClient(uri, { 
-     useUnifiedTopology: true, 
      pkFactory: { createPk: () =>  new UUID().toBinary() }
    });
 

source/whats-new.txt

@@ -385,7 +385,7 @@ to get your app up and running in a correct state quickly.
   a function. Now, the argument must be a function. Specifying a
   boolean will result in an error being thrown.
 
-- It is longer required to specify ``useUnifiedTopology`` or ``useNewUrlParser``.
+- It is no longer required to specify ``useUnifiedTopology`` or ``useNewUrlParser``.
 
 ``createCollection()``
 ++++++++++++++++++++++
@@ -555,7 +555,7 @@ Unified Topology
   to a ``mongod``. The differences between this and previous versions
   is `detailed here <https://mongodb.github.io/node-mongodb-native/3.6/reference/unified-topology/>`__.
 
-- It is longer required to specify ``useUnifiedTopology`` or ``useNewUrlParser``.
+- It is no longer required to specify ``useUnifiedTopology`` or ``useNewUrlParser``.
 
 - You must use the new ``directConnection`` `option <{+api+}/interfaces/MongoClientOptions.html#directConnection>`__
   to connect to uninitialized replica set members.