Remove core:init command.

docs/site-aliases.md

@@ -75,10 +75,6 @@ drush:
       - /etc/drush/sites
 ```
 
-The command `drush core:init` will automatically configure your
-~/.drush/drush.yml configuration file to add `~/.drush/sites` and
-`/etc/drush/sites` as locations where alias files may be placed.
-
 A canonical alias named _example_ that points to a local
 Drupal site named at http://example.com like this:
 

examples/example.prompt.sh

@@ -4,14 +4,13 @@
 #
 # Note: This file does a lot, and is designed for Bash. If you want to show the
 # currently set alias in your prompt, use the first 2 values below as an example.
-# This example can be used directly for the POWERLEVEL9K theme for Oh My Zsh.
+
+# This section can be used for the POWERLEVEL9K theme for Oh My Zsh.
 #FILE="${TMPDIR:-/tmp/}/drush-env-${USER}/drush-drupal-site-$$"
 #POWERLEVEL9K_CUSTOM_DRUSH="[ -r $FILE ] && cat $FILE"
 #POWERLEVEL9K_CUSTOM_DRUSH_BACKGROUND="green"
 #POWERLEVEL9K_LEFT_PROMPT_ELEMENTS=(context dir vcs custom_drush)
-#
-# Use `drush init` to copy this to ~/.drush/drush.prompt.sh, and source it in
-# ~/.bashrc or ~/.bash_profile.
+
 #
 # Note that your Bash session must already have the __git_ps1 function available.
 # Typically this is provided by git-prompt.sh, see instructions for downloading