[PATCH] user32/tests: Remove workaround for GetComboBoxInfo() availability

[Marvin]

Hi,

While running your changed tests on Windows, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?
Full results can be found at
https://testbot.winehq.org/JobDetails.pl?Key=35825

Your paranoid android.


=== w7u (32 bit msg) ===
msg.c:12140: Test failed: WmMouseHoverSeq: 0: the msg sequence is not complete: expected 0118 - actual 0000
msg.c:12142: Test failed: wrong tme.dwFlags 00000001, expected 00000000
msg.c:12142: Test failed: wrong tme.hwndTrack 002F012E, expected 00000000
msg.c:12142: Test failed: wrong tme.dwHoverTime 400, expected 0