[UNIKRAFT PATCH 6/8] Correct license headers introduced by UPB

[Simon Kuenzer <simon.kuenzer@xxxxxxxxx>]

This commit removes the additional clause
"THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY"
from BSD license headers that got introduced by mistake
by Razvan Cojocaru with the following commit:
 63fac86c7 - lib/uknetdev: Netdev registration

On the one hand, this additional clause is redundant because
the BSD license already states that it must remain and the
copyright notice must be kept.
On the other hand, the clause freezes the file header
and prohibits future contributors from extending the
copyright notice for their contributions. This additional
clause is not part of the official BSD 3-clause.

The original author consents to the change with a `Signed-off-by`
or `Reviewed-by` tag to this commit.

Signed-off-by: Simon Kuenzer <simon.kuenzer@xxxxxxxxx>
---
 lib/uknetdev/include/uk/netdev.h        | 2 --
 lib/uknetdev/include/uk/netdev_core.h   | 2 --
 lib/uknetdev/include/uk/netdev_driver.h | 2 --
 lib/uknetdev/netdev.c                   | 2 --
 4 files changed, 8 deletions(-)

diff --git a/lib/uknetdev/include/uk/netdev.h b/lib/uknetdev/include/uk/netdev.h
index 74a04ad73..b3ee666b3 100644
--- a/lib/uknetdev/include/uk/netdev.h
+++ b/lib/uknetdev/include/uk/netdev.h
@@ -30,8 +30,6 @@
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
- *
- * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
  */
 /* Derived from DPDK rte_ethdev_core.h - DPDK.org 18.02.2 */
 #ifndef __UK_NETDEV__
diff --git a/lib/uknetdev/include/uk/netdev_core.h 
b/lib/uknetdev/include/uk/netdev_core.h
index df6ceebfd..e8ebaae8b 100644
--- a/lib/uknetdev/include/uk/netdev_core.h
+++ b/lib/uknetdev/include/uk/netdev_core.h
@@ -30,8 +30,6 @@
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
- *
- * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
  */
 /* Derived from DPDK rte_ethdev_core.h - DPDK.org 18.02.2 */
 #ifndef __UK_NETDEV_CORE__
diff --git a/lib/uknetdev/include/uk/netdev_driver.h 
b/lib/uknetdev/include/uk/netdev_driver.h
index 6033f6201..96408580b 100644
--- a/lib/uknetdev/include/uk/netdev_driver.h
+++ b/lib/uknetdev/include/uk/netdev_driver.h
@@ -28,8 +28,6 @@
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
- *
- * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
  */
 #ifndef __UK_NETDEV_DRIVER__
 #define __UK_NETDEV_DRIVER__
diff --git a/lib/uknetdev/netdev.c b/lib/uknetdev/netdev.c
index 87322c7f4..cb02b06a5 100644
--- a/lib/uknetdev/netdev.c
+++ b/lib/uknetdev/netdev.c
@@ -30,8 +30,6 @@
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
  * POSSIBILITY OF SUCH DAMAGE.
- *
- * THIS HEADER MAY NOT BE EXTRACTED OR MODIFIED IN ANY WAY.
  */
 #define _GNU_SOURCE /* for asprintf() */
 #include <stdio.h>
-- 
2.20.1