I have this regular expression to find certain keywords on a line:
.*(word1|word2|word3).*
In the find and replace feature of the latest VS
If you want to delete the entire line make your regex find the entire line and include the linefeed as well. Something like:
^.*(word1|word2|word3).*\n
Then ALT-Enter will select all lines that match and Delete will eliminate them including the lines they occupied.