Remove a deprecated doxygen feature option.

The layout generated at

https://www.dealii.org/current/doxygen/deal.II/classes.html

will always now have a single column (with or without the now-deprecated
option), which is much more legible anyway.

diff --git a/doc/doxygen/options.dox.in b/doc/doxygen/options.dox.in
index 4a3b15219b922803426e7c3732cd009af05b0e93..5e3d23ac7b2b2f4f9151a84cb6d9477a1f5bdd7b 100644 (file)
--- a/doc/doxygen/options.dox.in
+++ b/doc/doxygen/options.dox.in
@@ -106,7 +106,6 @@ VERBATIM_HEADERS       = NO
 #---------------------------------------------------------------------------
 
 ALPHABETICAL_INDEX     = YES
-COLS_IN_ALPHA_INDEX    = 3
 
 #---------------------------------------------------------------------------
 # configuration options related to the HTML output