Only handle /usr/bin/zsh symlink in postrm/remove and postinst/configure stages

Introducing compatibility with the standards-ignoring usrmerge
package, the zsh package started to create and remove the /usr/bin/zsh
symlink in all possible stages of the according maintainer scripts:
The symlink was even created on zsh.postinst being called with abort-*
as parameter and on zsh.postrm being called with upgrade as parameter,
leading to a removal and recreation of the symlink during upgrades and
hence being without that symlink for a more or less short timespan.

Closes: #841048

0 files changed, 0 insertions, 0 deletions