fix(git)!: remove gt alias

BREAKING CHANGE: `gt` alias clashes with Graphite CLI
(https://graphite.dev). See https://github.com/ohmyzsh/ohmyzsh/pull/11910#issuecomment-1736340910

plugins/git/git.plugin.zsh

@@ -347,7 +347,6 @@ alias gsw='git switch'
 alias gswc='git switch --create'
 alias gswd='git switch $(git_develop_branch)'
 alias gswm='git switch $(git_main_branch)'
-alias gt='git tag'
 alias gta='git tag --annotate'
 alias gts='git tag --sign'
 alias gtv='git tag | sort -V'