sparc: cleanup math-emu

- Drop unused assignment from Makefile
- Replace EXTRA_CFLAGS with ccflags-y
- Delete unused file

Signed-off-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
diff --git a/arch/sparc/math-emu/Makefile b/arch/sparc/math-emu/Makefile
index 8136987..86995d6 100644
--- a/arch/sparc/math-emu/Makefile
+++ b/arch/sparc/math-emu/Makefile
@@ -2,7 +2,7 @@
 # Makefile for the FPU instruction emulation.
 #
 
-obj-y    := math.o
+# supress all warnings - as math.c produces a lot!
+ccflags-y := -w
 
-EXTRA_AFLAGS := -ansi
-EXTRA_CFLAGS = -I. -Iinclude/math-emu -w
+obj-y    := math.o