docs(configuration): update optimization.removeAvailableModules (#7130)

Author: snitin315

src/content/configuration/optimization.mdx

@@ -424,7 +424,7 @@ module.exports = {
 
 `boolean = false`
 
-Tells webpack to detect and remove modules from chunks when these modules are already included in all parents. Setting `optimization.removeAvailableModules` to `true` will enable this optimization. Enabled by default in [`production` mode](/configuration/mode/).
+Tells webpack to detect and remove modules from chunks when these modules are already included in all parents. Setting `optimization.removeAvailableModules` to `true` will enable this optimization.
 
 **webpack.config.js**
 
@@ -437,7 +437,7 @@ module.exports = {
 };
 ```
 
-W> `optimization.removeAvailableModules` reduces the performance of webpack, and will be disabled in `production` mode by default in next major release. Disable it in `production` mode if you want extra build performance.
+W> `optimization.removeAvailableModules` reduces the performance of webpack.
 
 ## optimization.removeEmptyChunks