fix(vim): remove bad escapes from quickfix statusline
fix(vim): remove bad escapes from quickfix statusline

These were causing errors to be spewed to the console during blur
to/from the quickfix listing.

wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent,wincent/wincent