[LyX/master] DocBook: remove useless includes.

[Thibaut Cuvelier]

commit 6a4d3dbef779c0be9a7e69f1801b2bfb4dcb86c8
Author: Thibaut Cuvelier <tcuvelier at lyx.org>
Date:   Tue Aug 18 05:40:34 2020 +0200

    DocBook: remove useless includes.
---
 src/output_docbook.cpp |    7 +------
 1 files changed, 1 insertions(+), 6 deletions(-)

diff --git a/src/output_docbook.cpp b/src/output_docbook.cpp
index 12601c5..0481890 100644
--- a/src/output_docbook.cpp
+++ b/src/output_docbook.cpp
@@ -16,8 +16,6 @@
 #include "BufferParams.h"
 #include "Font.h"
 #include "InsetList.h"
-#include "Layout.h"
-#include "OutputParams.h"
 #include "Paragraph.h"
 #include "ParagraphList.h"
 #include "ParagraphParameters.h"
@@ -30,11 +28,7 @@
 #include "insets/InsetLabel.h"
 #include "insets/InsetNote.h"
 
-#include "support/convert.h"
-#include "support/debug.h"
 #include "support/lassert.h"
-#include "support/lstrings.h"
-#include "support/textutils.h"
 
 #include "support/regex.h"
 
@@ -159,6 +153,7 @@ string fontToRole(xml::FontTypes type)
 	}
 }
 
+
 string fontToAttribute(xml::FontTypes type) {
 	// If there is a role (i.e. nonstandard use of a tag), output the attribute. Otherwise, the sheer tag is sufficient
 	// for the font.