chore: remove unused markup captures

Author: kristijanhusak

queries/org/markup.scm

@@ -4,12 +4,6 @@
  (expr "_" @underline)
  (expr "=" @verbatim)
  (expr "+" @strikethrough)
- (expr "[" @link.start)
- (expr "]" @link.end)
- (expr "[" @date_inactive.start "num" "-" "num" "-" "num")
- (expr "]" @date_inactive.end)
- (expr "<" @date_active.start "num" "-" "num" "-" "num")
- (expr ">" @date_active.end)
  (expr "[" @footnote.start "str" @_fn ":" (#eq? @_fn "fn"))
  (expr "]" @footnote.end)
  (expr "\\" "str" @latex.plain)