Flow v0.123.0 in www

Summary:
```
cd ~/fbsource/fbcode
flow/facebook/deploy_www.sh 0.123.0
```

Reviewed By: dsainati1

Differential Revision: D21072854

fbshipit-source-id: 862c05a900475320eae125440f7cb199e92152e5

Author: panagosg7

src/model/encoding/__tests__/convertFromHTMLToContentBlocks-test.js

@@ -81,9 +81,6 @@ const convertFromHTML = (html_string, config) => {
    * Flow. */
   const options = {
     ...DEFAULT_CONFIG,
-    /* $FlowFixMe(>=0.111.0) This comment suppresses an error found when Flow
-     * v0.111.0 was deployed. To see the error, delete this comment and run
-     * Flow. */
     ...config,
   };