staging: rtl8723bs: remove unused RTL8188E antenna selection macros

staging: rtl8723bs: remove unused RTL8188E antenna selection macros

Remove the SET_TX_DESC_ANTSEL_{A,B,C}_88E macros from odm_types.h.
These are leftover dead code for the RTL8188E chip and have no callers
in the rtl8723bs driver. The RTL8188E is a different chip family and
has its own driver at drivers/net/wireless/realtek/rtl8xxxu

This addresses the TODO item "find and remove any code for other chips
that is left over".

Signed-off-by: Mashiro Chen <mashiro.chen@mailbox.org>
Link: https://patch.msgid.link/20260331050434.102744-1-mashiro.chen@mailbox.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>