Remove kernel-internals from USING: lists where it is not needed

contrib/crypto/sha1.factor

@@ -1,5 +1,5 @@
 USING: kernel io strings sequences namespaces math parser
-vectors hashtables kernel-internals math-contrib crypto ;
+vectors hashtables math-contrib crypto ;
 IN: crypto-internals
 
 ! Implemented according to RFC 3174.

contrib/space-invaders/cpu-8080.factor

@@ -21,7 +21,7 @@
 ! OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
 ! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 USING: kernel math sequences errors vectors prettyprint io namespaces arrays
-       words parser hashtables lazy-lists parser-combinators kernel-internals strings ;
+       words parser hashtables lazy-lists parser-combinators  strings ;
 IN: cpu-8080
 
 TUPLE: cpu b c d e f h l a pc sp halted? last-interrupt cycles ram ;

contrib/space-invaders/space-invaders.factor

@@ -20,7 +20,7 @@
 ! WHETHER IN 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.
-USING: alien cpu-8080 errors generic io kernel kernel-internals
+USING: alien cpu-8080 errors generic io kernel
 math namespaces sequences styles threads gadgets gadgets opengl arrays 
 concurrency ;
 IN: space-invaders

contrib/sqlite/tuple-db-tests.factor

@@ -22,7 +22,7 @@
 ! ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 !
 IN: tuple-db
-USING: io kernel kernel-internals sequences namespaces
+USING: io kernel sequences namespaces
 hashtables sqlite errors math words generic test ;
 
 TUPLE: testdata one two ;