Remove and swap out some bash specific logic

zsh/git.zsh

@@ -20,12 +20,6 @@ alias gix="gitx"
 alias gx="gitx"
 
 # Git Completion
-if [ -n "$BASH_VERSION" ]; then
-  if [ -f "/usr/local/etc/bash_completion.d/git-completion.bash" ]; then
-    source "/usr/local/etc/bash_completion.d/git-completion.bash"
-  fi
-
-  # Only needed for Bash. Zsh is much smarter with it's auto-completion ^_^
-  complete -o default -o nospace -F _git g
-  complete -o default -o nospace -F _git gi
+if [ -d "/usr/local/share/zsh/site-functions" ]; then
+  fpath=("/usr/local/share/zsh/site-functions" "${fpath[@]}")
 fi