Remove old Zsh completion script

helpers/pmbootstrap-autocompletion.zsh

-#!zsh
-# Installation:
-#
-# Copy this file to ~/.zsh/ (create it, if it doesn't exist, or put it
-# somewhere that makes sense to you). Then, insert the following line
-# in your ~/.zshrc (making sure to use the right folder name, if changed):
-#
-#	source ~/.zsh/pmbootstrap-autocompletion.zsh
-#
-# Then, set the variable PMBOOTSTRAP_DIR to your `pmbootstrap` root.
-# Example:
-#
-#	PMBOOTSTRAP_DIR=/home/axel/Git/pmbootstrap
-#
-# This file is rudimentary, pmbootstrap actions and packages are autocompleted
-# so far. Further ideas for improvements are here:
-# <https://github.com/postmarketOS/pmbootstrap/pull/1232>
-
-PMBOOTSTRAP_DIR=
-
-_pmbootstrap_commands()
-{
-	grep '^def ' $PMBOOTSTRAP_DIR/pmb/helpers/frontend.py | cut -d ' ' -f 2 \
-		| cut -d '(' -f 1 | grep -v '^_'
-}
-
-_pmbootstrap_targets()
-{
-	case $1 in
-		build|checksum|pkgrel_bump)
-			find $PMBOOTSTRAP_DIR/aports/ -mindepth 2 -maxdepth 2 -type d \
-				-printf '%f\n' | sed "s|$PMBOOTSTRAP_DIR/aports/||g"
-			;;
-		kconfig)
-			echo edit check
-			;;
-		flasher)
-			echo boot flash_kernel flash_rootfs sideload list_flavors \
-				list_devices
-			;;
-	esac
-}
-
-_pmbootstrap()
-{
-	local curcontext="$curcontext" state line
-	typeset -A opt_args
-
-	_arguments -C \
-		'1: :->command'\
-		'2: :->target'
-
-	case $state in
-		command)
-			compadd `_pmbootstrap_commands`
-			;;
-		target)
-			compadd `_pmbootstrap_targets $line[1]`
-			;;
-	esac
-}
-
-if [ -f $PMBOOTSTRAP_DIR/pmbootstrap.py ]; then
-	compdef _pmbootstrap pmbootstrap
-fi