fix starship config and remove powerline pip install

roles/fish/files/starship.toml

@@ -21,7 +21,7 @@ behind = "⇣${count} "
 
 [git_metrics]
 disabled = false
-added_style = 'bold blue' ■
+added_style = 'bold blue'
 format = '[+$added]($added_style)/[-$deleted]($deleted_style) '
 
 [gcloud]

roles/tmux/tasks/main.yml

@@ -1,8 +1,4 @@
 ---
-- name: install powerline-status with pip
-  pip:
-    name: powerline-status
-
 - name: configure tmux
   template:
     src: tmux.conf.j2