fix(plugins): remove-optimism (#77)

Remove the unmaintained Optimism plugin from the list of plugins

Author: Dan Forbes

src/pluginList.ts

@@ -15,10 +15,6 @@ export default [
       name: "web3-plugin-craftsman",
       isFeatured: false
     },
-    {
-      name: "@eth-optimism/web3.js-plugin",
-      isFeatured: false
-    },
     {
       name: "@conx3/web3-plugin-near",
       isFeatured: false