cleanup author.numbers

Remove comments that are no longed needed now that good idea of
the header being frozen has been done.

tmp/author.csv

@@ -1,12 +1,3 @@
-# 0:	lower case sort word,,,,,,,,,
-# 1:	name,,,,,,,,,
-# 2:	winner_handle,,,,,,,,,
-# 3:	url,,,,,,,,,
-# 4:	email address,,,,,,,,,
-# 5:	location ISO 3166 code,,,,,,,,,
-# 6:	deprecated twitter handle,,,,,,,,,
-# 7:	mastodon handle,,,,,,,,,
-# 8:	alternate url,,,,,,,,,
 # sort_word,name,author_handle,url,email,location_code,deprecated_twitter,mastodon,alternate_url,
 adamovsky,Ondřej Adamovský,Ondrej_Adamovsky,null,oa@cmail.cz,CZ,null,null,null,
 algmyr,Anton Älgmyr,Anton_Algmyr,algmyr@student.chalmers.se,@aalgmyr,SE,@aalgmyr,null,null,