Bug 721210 - Remove dead include paths from XPCOM Makefiles. r=bsmedberg.

xpcom/build/Makefile.in

@@ -99,8 +99,6 @@ LOCAL_INCLUDES	= \
 		-I$(srcdir)/../io \
 		-I$(srcdir)/../components \
 		-I$(srcdir)/../threads \
-		-I$(srcdir)/../threads/_xpidlgen \
-		-I$(srcdir)/../proxy/src \
 		-I$(srcdir)/../reflect/xptinfo/src \
 		-I$(topsrcdir)/chrome/src \
 		-I$(srcdir)/../../docshell/base \

xpcom/components/Makefile.in

@@ -81,7 +81,6 @@ SDK_XPIDLSRCS	= \
 LOCAL_INCLUDES	= \
 	-I$(srcdir)/../reflect/xptinfo/src \
 	-I$(srcdir)/../base \
-	-I$(srcdir)/../thread \
 	-I$(srcdir)/../ds \
 	-I$(srcdir)/../build \
 	-I.. \

xpcom/tests/Makefile.in

@@ -163,7 +163,6 @@ include $(topsrcdir)/config/rules.mk
 
 LOCAL_INCLUDES	= \
                 -I$(srcdir)/../ds \
-		-I$(srcdir)/services \
 		$(NULL)
 
 libs::