Removing more obsolete files.

layout/xul/base/src/Makefile.in

@@ -44,7 +44,6 @@ CPPSRCS		= \
         nsBoxLayoutState.cpp \
         nsBoxToBlockAdaptor.cpp \
         nsButtonBoxFrame.cpp \
-        nsCheckBoxFrame.cpp \
         nsContainerBox.cpp \
         nsLeafBoxFrame.cpp \
         nsSprocketLayout.cpp \

layout/xul/base/src/makefile.win

@@ -46,7 +46,6 @@ CPPSRCS=					\
     	nsSliderFrame.cpp \
         nsProgressMeterFrame.cpp        \
         nsTitledButtonFrame.cpp        \
-    	nsCheckBoxFrame.cpp \
         nsTitledBoxFrame.cpp        \
         nsBox.cpp        \
         nsContainerBox.cpp        \