Accepting request 18109 from shells

Copy from shells/zsh based on submit request 18109 from user hennevogel

OBS-URL: https://build.opensuse.org/request/show/18109
OBS-URL: https://build.opensuse.org/package/show/openSUSE:Factory/zsh?expand=0&rev=12

zshrc

@@ -1,7 +1,3 @@
-# read bash.bashrc first for some features we dont want 
-# to re-implement here
-source /etc/bash.bashrc
-
 # zsh line editing
 : ${ZSHEDIT:="emacs"}
 : ${TERM:=linux}