svx: Move SvxColorValueSet from svxcore to svx

By now, it's only used by
SvxColorValueSet_docking/SvxColorDockingWindow
which both are in svx as well.

Move from svxcore to svx and stop exporting
(drop the SVXCORE_DLLPUBLIC).

While at it, also drop an unused <set> include.

Change-Id: I09fdc1cd42bfa5143f50d8960352155b5647a831
Reviewed-on: https://gerrit.libreoffice.org/c/core/+/206309
Reviewed-by: Michael Weghorn <m.weghorn@posteo.de>
Tested-by: Jenkins

svx/Library_svx.mk

@@ -272,6 +272,7 @@ $(eval $(call gb_Library_add_exception_objects,svx,\
     svx/source/tbxctrls/bulletsnumbering \
     svx/source/tbxctrls/colrctrl \
     svx/source/tbxctrls/SvxColorChildWindow \
+    svx/source/tbxctrls/SvxColorValueSet \
     svx/source/tbxctrls/fillctrl \
     svx/source/tbxctrls/formatpaintbrushctrl \
     svx/source/tbxctrls/grafctrl \

svx/Library_svxcore.mk

@@ -439,7 +439,6 @@ $(eval $(call gb_Library_add_exception_objects,svxcore,\
     svx/source/tbxctrls/PaletteManager \
     svx/source/tbxctrls/tbcontrl \
     svx/source/tbxctrls/tbxcolorupdate \
-    svx/source/tbxctrls/SvxColorValueSet \
     svx/source/tbxctrls/StylesPreviewToolBoxControl \
     svx/source/tbxctrls/StylesPreviewWindow \
     svx/source/toolbars/extrusionbar \

svx/inc/SvxColorValueSet.hxx

@@ -21,10 +21,8 @@
 
 #include <svtools/valueset.hxx>
 #include <svx/IColorSet.hxx>
-#include <svx/svxdllapi.h>
-#include <set>
 
-class SVXCORE_DLLPUBLIC SvxColorValueSet : public ValueSet, public IColorSet
+class SvxColorValueSet : public ValueSet, public IColorSet
 {
 public:
     SvxColorValueSet(std::unique_ptr<weld::ScrolledWindow> pWindow);