iwlwifi: remove iwl_tx_queue declaration
iwlwifi: remove iwl_tx_queue declaration

The declaration isn't needed as the struct is only
used in code that includes the right header file.

Signed-off-by: Johannes Berg <bff32994ff0f8d048f262a8388145a71b6071bfe@intel.com>
Signed-off-by: Wey-Yi Guy <15ba08e2ad0b84ec2e6b8e47b27706f8a8e5edd0@intel.com>

TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,TeamVee-Kanas/android_kernel_samsung_kanas,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs,KristFoundation/Programs