Try this:
Code:
IFS="
"
for file in `find /path/to/files`;do tail -n $((`grep -c "" $file`-1)) $file > /tmp/tempfile;mv /tmp/tempfile $file;done
NOTE: This will remove the first line from any file returned by the find command! If you cannot create a find pattern to only match the files you want to edit I would add an if statement to look for your pattern on the first line of every file.