iwlwifi: remove all occurrences of the FSF address paragraph

The Free Software Foundation address is superfluous and causes
checkpatch to issue a warning when present.  Remove all paragraphs
with FSF's address to prevent that.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>

drivers/net/wireless/intel/iwlwifi/iwl-io.h

@@ -13,10 +13,6 @@
  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  * more details.
  *
- * You should have received a copy of the GNU General Public License along with
- * this program; if not, write to the Free Software Foundation, Inc.,
- * 51 Franklin Street, Fifth Floor, Boston, MA 02110, USA
- *
  * The full GNU General Public License is included in this distribution in the
  * file called LICENSE.
  *