wifi: iwlwifi: Remove duplicated include in trans.c

The header files fw/api/tx.h is included twice in gen1_2/trans.c,
so one inclusion of each can be removed.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Closes: https://bugzilla.openanolis.cn/show_bug.cgi?id=22932


Signed-off-by: Yang Li <yang.lee@linux.alibaba.com>
Link: https://patch.msgid.link/20250723070522.2195817-1-yang.lee@linux.alibaba.com


Signed-off-by: Miri Korenblit <miriam.rachel.korenblit@intel.com>