chg: update results for Manual/assPrimes.tst

The old and the new result are mathematically the same.
I have checked this manually.
chg: remove assprimeszerodim.lib from comment in modstd.lib

(cherry picked from commit 9b8ceaf77009596a461675ade1f67fc327c8a6ca)
Signed-off-by: Andreas Steenpass <steenpass@mathematik.uni-kl.de>

Conflicts:
	Singular/LIB/modstd.lib