doc: remove bash completion as it doesn't work anymore

NEWS

@@ -3,6 +3,7 @@ ncmpcpp-0.6.3 (????-??-??)
 * Fix floating point exception when adding a specific number of random items.
 * Passwords are no longer added to the input history.
 * It is now possible to put more than one specific flag consecutively in formats.
+* Bash completion file was removed as it no longer works.
 
 ncmpcpp-0.6.2 (2014-12-13)
 

doc/ncmpcpp-completion.bash

@@ -1,34 +0,0 @@
-# Installation:
-# - If you have system bash completion, place this in /etc/bash_completion.d or
-#   source it from $HOME/.bash_completion
-# - If you don't have system bash completion, source this from your .bashrc
-
- _ncmpcpp ()
-{
-    local cur prev cmds opts
-
-    cur="$2"
-    prev="$3"
-    cmds=`ncmpcpp --help 2>&1 | awk '/^  [a-z]+ /{print $1}'`;
-    opts="`ncmpcpp --help 2>&1 | awk '/^  -.+,/{print $1 "\n" $2}' | sed -e 's/,//;$a--now-playing'`"
-
-    case "$prev" in
-        ncmpcpp)
-        COMPREPLY=($(compgen -W '$opts $cmds' -- "$cur"))
-        ;;
-        --port|-p|--host|-h)
-        COMPREPLY=()
-        ;;
-        --help|-?|--version|-v|--now-playing)
-        return
-        ;;
-        next|pause|play|prev|stop|toggle|volume)
-        opts="`echo $opts | sed -e 's/--port//;s/--host//;s/-p//;s/-h//'`"
-        COMPREPLY=($(compgen -W '$opts' -- "$cur"))
-        ;;
-        *)
-        COMPREPLY=($(compgen -W '$opts $cmds' -- "$cur"))
-        ;;
-    esac
-}
-complete -F _ncmpcpp ncmpcpp