Removing plugin that was named after an external tool, which carries a history...

Removing plugin that was named after an external tool, which carries a history as a racist phrase. Was reported by a user of OMZ who shared some background on the terminology and how it made them feel. (#8027)

plugins/bwana/README.md

-# Bwana
-
-This plugin provides a function to open `man` pages directly with [Bwana](https://www.bruji.com/bwana/).
-
-To use it add bwana to the plugins array in your zshrc file.
-
-```bash
-plugins=(... bwana)
-```
-
-The `bwana` function opens the man page of the passed argument in the Bwana app.
-For example: `bwana ln` opens the man page for `ln` in Bwana.

plugins/bwana/bwana.plugin.zsh

-#
-# Requires https://www.bruji.com/bwana/
-#
-if [[ -e /Applications/Bwana.app ]] ||
-    ( system_profiler -detailLevel mini SPApplicationsDataType | grep -q Bwana )
-then
-  function bwana() {
-    open "man:$1"
-  }
-else
-  echo "Bwana lets you read man files in Safari through a man: URI scheme"
-  echo "To use it within Zsh, install it from https://www.bruji.com/bwana/"
-fi