wlan: Remove WLAN_FEATURE_HOLD_RX_WAKELOCK feature

- WLAN_FEATURE_HOLD_RX_WAKELOCK feature acquires 50 ms wake lock for
  every rx data packet.
- Remove this feature such that we can avoid wake lock for every RX
  data packet.

Change-Id: I90c8441694aac5a2df029def5f8b7f5d62eee484
CRs-Fixed: 929621
Signed-off-by: Albert I <kras@raphielgang.org>
Signed-off-by: starlight5234 <ifist2834@gmail.com>