legacy tests: migrate test84

src/nvim/testdir/test84.in

@@ -1,35 +0,0 @@
-Tests for curswant not changing when setting an option
-
-STARTTEST
-:so small.vim
-:/^start target options$/+1,/^end target options$/-1 yank
-:let target_option_names = split(@0)
-:function TestCurswant(option_name)
-:  normal! ggf8j
-:  let curswant_before = winsaveview().curswant
-:  execute 'let' '&'.a:option_name '=' '&'.a:option_name
-:  let curswant_after = winsaveview().curswant
-:  return [a:option_name, curswant_before, curswant_after]
-:endfunction
-:
-:new
-:put =['1234567890', '12345']
-:1 delete _
-:let result = []
-:for option_name in target_option_names
-:  call add(result, TestCurswant(option_name))
-:endfor
-:
-:new
-:put =map(copy(result), 'join(v:val, '' '')')
-:1 delete _
-:write test.out
-:
-:qall!
-ENDTEST
-
-start target options
-	tabstop
-	timeoutlen
-	ttimeoutlen
-end target options

src/nvim/testdir/test84.ok

@@ -1,3 +0,0 @@
-tabstop 7 4
-timeoutlen 7 7
-ttimeoutlen 7 7