refactor: Remove size tracking of SSR build (#1434)

Author: rschristian

.changeset/many-chairs-add.md

@@ -0,0 +1,5 @@
+---
+'preact-cli': patch
+---
+
+This disable SSR size tracking. This stops `size-plugin-ssr.json` from being generated and stops file sizes from being reported to the developer.

packages/cli/lib/lib/webpack/webpack-server-config.js

@@ -1,5 +1,4 @@
 const { resolve } = require('path');
-const SizePlugin = require('size-plugin');
 const merge = require('webpack-merge');
 const baseConfig = require('./webpack-base-config');
 
@@ -24,9 +23,6 @@ function serverConfig(env) {
 				async: resolve(__dirname, './dummy-loader'),
 			},
 		},
-		plugins: [
-			new SizePlugin({ filename: 'size-plugin-ssr.json' }),
-		]
 	};
 }