staging: vt6655: Remove unused driver

staging: vt6655: Remove unused driver

Forest Bond contributed this driver in 2009.

The following reasons lead to the removal:
- This driver generates maintenance workload
- This driver has a maximum 54MBit/s as it supports only 802.11 b/g.
  Peak throughput is 3MBytes/s but this lasts only for a second.
  Typically throughput is 1.7MBytes/s.
- Depending on the number of devices on the channel the device looses
  connection and cannot reconnect for 5-60 seconds. Watching a youtube
  video is OK because of the buffer. But surfing can then be really a
  pain.
- Its form factor is mini PCI (not miniPCIe) that is old and large.
- Hardly not to buy.

Link: https://lore.kernel.org/linux-staging/2024100923-player-directive-ffa8@gregkh/T/#t
Signed-off-by: Philipp Hortmann <philipp.g.hortmann@gmail.com>
Link: https://lore.kernel.org/r/20241010164221.13392-1-philipp.g.hortmann@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>