Remove include of converters.hxx from precompiled_drawinglayer.hxx

Commit cf48347e didn't take into
account commit 632edfab landed
before it.

Change-Id: I108027a460943b14194adcff4af2a41b7720f3be
Reviewed-on: https://gerrit.libreoffice.org/42677Reviewed-by: Mike Kaganski <mike.kaganski@collabora.com>
Tested-by: Mike Kaganski <mike.kaganski@collabora.com>

drawinglayer/inc/pch/precompiled_drawinglayer.hxx

@@ -196,6 +196,5 @@
 #include <drawinglayer/processor2d/baseprocessor2d.hxx>
 #include <drawinglayer/processor3d/baseprocessor3d.hxx>
 #include <drawinglayer/texture/texture.hxx>
-#include <drawinglayer/tools/converters.hxx>
 
 /* vim:set shiftwidth=4 softtabstop=4 expandtab: */