cloudooo: use default mimetype_registry

- removes wkhtmltopdf entry ;
  as cloudooo has a hack to use wkhtmltopdf
  (see 8b49da34 in cloudooo repository)

- removes useless mimetype entries ;
  OnlyOffice entries were also defined in the generic_cloudoo recipe.

software/cloudooo/software.cfg

@@ -18,11 +18,5 @@ timeout = 600
 ssl-dict-parameter-name = ssl
 #ssl-dict =
 mimetype-entry-addition-parameter-name = mimetype-entry-addition
-mimetype-entry-addition =
-  text/html application/pdf wkhtmltopdf
-  application/vnd.openxmlformats-officedocument.wordprocessingml.document application/x-asc-text x2t
-  application/vnd.openxmlformats-officedocument.spreadsheetml.sheet application/x-asc-spreadsheet x2t
-  application/vnd.openxmlformats-officedocument.presentationml.presentation application/x-asc-presentation x2t
-  application/x-asc-text application/vnd.openxmlformats-officedocument.wordprocessingml.document x2t
-  application/x-asc-spreadsheet application/vnd.openxmlformats-officedocument.spreadsheetml.sheet x2t
-  application/x-asc-presentation application/vnd.openxmlformats-officedocument.presentationml.presentation x2t
+#mimetype-entry-addition =
+#  text/html application/pdf wkhtmltopdf