lib/options: remove literalDocBook

no longer supported. warning when used would not be appropriate, and
docbook has been on the way out for long enough that throwing an error
should not be necessary either.

1 files changed, 1 insertions, 13 deletions

diff --git a/lib/options.nix b/lib/options.nix
index af7914bb513..11a3984aa47 100644
--- a/lib/options.nix
+++ b/lib/options.nix
@@ -344,19 +344,7 @@ rec {
     if ! isString text then throw "literalExpression expects a string."
     else { _type = "literalExpression"; inherit text; };
 
-  literalExample = lib.warn "literalExample is deprecated, use literalExpression instead, or use literalDocBook for a non-Nix description." literalExpression;
-
-
-  /* For use in the `defaultText` and `example` option attributes. Causes the
-     given DocBook text to be inserted verbatim in the documentation, for when
-     a `literalExpression` would be too hard to read.
-  */
-  literalDocBook = text:
-    if ! isString text then throw "literalDocBook expects a string."
-    else
-      lib.warnIf (lib.isInOldestRelease 2211)
-        "literalDocBook is deprecated, use literalMD instead"
-        { _type = "literalDocBook"; inherit text; };
+  literalExample = lib.warn "literalExample is deprecated, use literalExpression instead, or use literalMD for a non-Nix description." literalExpression;
 
   /* Transition marker for documentation that's already migrated to markdown
      syntax.