Remove valek/zsh-hadoop-plugin

`valek/zsh-hadoop-plugin` is 404, remove

Signed-off-by: Joe Block <[email protected]>

README.md

@@ -1066,7 +1066,6 @@ Here are a few good sources for Nerd Fonts and Powerline-compatible fonts:
 - [gvm (yerinle)](https://github.com/yerinle/zsh-gvm) - Provides autocompletion for `gvm` (Groovy enVironment Manager).
 - [hab](https://github.com/alexdesousa/hab) - Automatically loads OS environment variables defined in the file `.envrc` if it's found when changing to a new directory.
 - [hacker-quotes](https://github.com/oldratlee/hacker-quotes) - Outputs a random hacker quote when you open a terminal.
-- [hadoop-plugin](https://github.com/valek/zsh-hadoop-plugin) - Adds some convenience aliases for [hadoop](https://hadoop.apache.org/) functions.
 - [haiku](https://github.com/alesr/oh-my-zsh-haiku-plugin) - Prints a haiku promoting work-life balance and stress management once every 24 hours when the terminal is open.
 - [hanami](https://github.com/davydovanton/hanami-zsh) - ZSH plugin for [hanami](http://hanamirb.org) projects.
 - [hangul](https://github.com/gomjellie/zsh-hangul) - Auto correct hangul(한글, korean) to English when it was supposed to be typed in English. 영어를 타이핑 해야되는데 한글로 타이핑된경우 자동으로 수정합니다.