rtl8188eu: Remove dead code associated with WAPI

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
rtl8188eu: Remove configuration variables *ANDROID* and associated dead code

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
rtl8188eu: Remove dead code associated with CONFIG_INTEL_XXX

Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>