[UNIKRAFT PATCH 7/8] 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 Bogdan Lascu with the following commit:
 32ad87545 - lib/vfscore: Add anonymous pipe

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/vfscore/pipe.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/lib/vfscore/pipe.c b/lib/vfscore/pipe.c
index 8d382965e..09597dbcb 100644
--- a/lib/vfscore/pipe.c
+++ b/lib/vfscore/pipe.c
@@ -29,8 +29,6 @@
  * 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.
  */
 
 #include <uk/config.h>
-- 
2.20.1