fix #74 - ddemangle listed as required tool but not used anymore

CHANGELOG.md

@@ -7,6 +7,7 @@ See [LDC announcement](https://forum.dlang.org/post/ssvxmrdpklhsrqlgrzas@forum.d
 
 ## Bugs fixed
 
+- About box, ddemangle was listed as a required tool but it is not anymore. (#74)
 - Messages, when selected, the recently added _Search Results_ category could not be emptied.
 - Highlighter, `q"()"`, `q"[]"`, `q"<>"`, `q"{}>"` strings highlighting was broken.
 - HTML export, the dialog proposed to open a file, not to save one.

src/u_infos.pas

@@ -247,10 +247,6 @@ begin
     'optional, the LDC D compiler, setup in "Options - Compilers paths"');
   itm.Parent := boxTools;
   itm.ReAlign;
-  itm := TToolInfo.Construct(self, tikFindable, 'ddemangle',
-    'optional, allows to demangle the symbols in the message widget');
-  itm.Parent := boxTools;
-  itm.ReAlign;
   itm := TToolInfo.Construct(self, tikRunning, 'dcd-server',
     'mandatory, provides IDE-grade features such as the completion');
   itm.Parent := boxTools;