Remove unicode from statusline

Some terminals use more characters than others for to display certain
unicode code points, this resulted the statusline to "leak" past the end
of the line causing characters at the next line to be highlighted
incorrectly.

plugin/statusline.lua

@@ -60,7 +60,7 @@ local function get_mode()
 end
 
 -- Display cusor line/total and column
-local position = '# ☰ %l/%L 󰠷 %2c '
+local position = '# %l/%L:%2c '
 
 -- Construct a statusline for special buffer types.
 local function special(group, name, title)