Revert "Added my zsh theme file, heavily based on sjl's" as it relies

on a dotfile to be in ~/bin.

This reverts commit f2f34f54.

themes/thomasjbradley.zsh-theme

-function prompt_char {
-    git branch >/dev/null 2>/dev/null && echo '±' && return
-    hg root >/dev/null 2>/dev/null && echo '☿' && return
-    echo '○'
-}
-
-function virtualenv_info {
-    [ $VIRTUAL_ENV ] && echo '('`basename $VIRTUAL_ENV`') '
-}
-
-function hg_prompt_info {
-    hg prompt --angle-brackets "\
-< on %{$fg[magenta]%}<branch>%{$reset_color%}>\
-< at %{$fg[yellow]%}<tags|%{$reset_color%}, %{$fg[yellow]%}>%{$reset_color%}>\
-%{$fg[green]%}<status|modified|unknown><update>%{$reset_color%}<
-patches: <patches|join( → )|pre_applied(%{$fg[yellow]%})|post_applied(%{$reset_color%})|pre_unapplied(%{$fg_bold[black]%})|post_unapplied(%{$reset_color%})>>" 2>/dev/null
-}
-
-PROMPT='
-%{$fg[magenta]%}%n%{$reset_color%} at %{$fg[yellow]%}%m%{$reset_color%} in %{$fg_bold[green]%}${PWD/#$HOME/~}%{$reset_color%}$(hg_prompt_info)$(git_prompt_info)
-$(virtualenv_info)$(prompt_char) '
-
-ZSH_THEME_GIT_PROMPT_PREFIX=" on %{$fg[magenta]%}"
-ZSH_THEME_GIT_PROMPT_SUFFIX="%{$reset_color%}"
-ZSH_THEME_GIT_PROMPT_DIRTY="%{$fg[green]%}!"
-ZSH_THEME_GIT_PROMPT_UNTRACKED="%{$fg[green]%}?"
-ZSH_THEME_GIT_PROMPT_CLEAN=""
-
-. ~/bin/dotfiles/zsh/aliases