I didn't say the replacement signature you created had advertising - I said that it contained something which was presumably considered offensive, or perhaps a violation this rule:
Quote Originally Posted by Acceptable Use Policy
You will not post any material that is knowingly false, misleading, or inaccurate.
Without knowing who deleted it, we can't be sure.

You should have been told that it was removed (and why) by the person who did it, so on behalf of the moderating team I apologise for that not happening.