[ZSH] Remove duplicate plugins

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

zsh/.zsh_plugins_shared.txt

@@ -6,14 +6,12 @@ ohmyzsh/ohmyzsh path:plugins/ssh-agent
 ohmyzsh/ohmyzsh path:plugins/pip
 ohmyzsh/ohmyzsh path:plugins/python
 ohmyzsh/ohmyzsh path:plugins/virtualenv
-ohmyzsh/ohmyzsh path:plugins/python
 ohmyzsh/ohmyzsh path:plugins/docker
 ohmyzsh/ohmyzsh path:plugins/docker-compose
 ohmyzsh/ohmyzsh path:plugins/command-not-found
 
 
 romkatv/powerlevel10k
-zsh-users/zsh-syntax-highlighting
 zsh-users/zsh-completions
 zsh-users/zsh-history-substring-search
 urbainvaes/fzf-marks