tests/test-config-env.py.out

formatting: drop `grey`, our custom black version

Now that the official black has all we want, we can drop this.

pager.pager=p0 # $TESTTMP/sysrc:4
ui.editor=e1 # $TESTTMP/userrc:2

pager.pager=p2 # $PAGER
ui.editor=e1 # $TESTTMP/userrc:2