tests: removed redundant "-u test" from test scripts
The tests are executed with a .hgrc file which adds "-u test" by
default.
#!/bin/sh
hg init
echo a > a
hg ci -Ama
hg an a
echo "[ui]" >> $HGRCPATH
echo "strict=True" >> $HGRCPATH
hg an a
hg annotate a
echo % should succeed - up is an alias, not an abbreviation
hg up