No arm source refers to SOFTFLOAT.

So why bother #defining it?

Change-Id: I539e91916cee082cacac594ddf628419b737fa9d
diff --git a/libc/arch-arm/arm.mk b/libc/arch-arm/arm.mk
index b1edfcc..8c5e681 100644
--- a/libc/arch-arm/arm.mk
+++ b/libc/arch-arm/arm.mk
@@ -44,8 +44,6 @@
 #    bionic/__strcpy_chk.cpp \
 #    bionic/__strcat_chk.cpp \
 
-libc_common_cflags_arm := -DSOFTFLOAT
-
 ##########################################
 ### CPU specific source files
 libc_bionic_src_files_arm += \