fix documentation of v.in.lines with new version of v.in.mapgen

git-svn-id: https://svn.osgeo.org/grass/grass/trunk@51738 15284696-431f-4ddb-bdfa-cd5b030d7da7

scripts/v.in.lines/v.in.lines.html

@@ -30,8 +30,6 @@ NaN,NaN
 167.846544,-46.516489
 167.846552,-46.516493
 EOF
-
-v.category in=two_lines out=lines_with_cats option=add
 </pre></div>