toolchain/gcc: Remove workaround for GCC 4.8

GCC 4.8 was removed a long time ago...

Signed-off-by: Daniel Engberg <daniel.engberg.lists@pyret.net>

toolchain/gcc/common.mk

@@ -123,15 +123,12 @@ GCC_CONFIGURE:= \
 		--with-gmp=$(TOPDIR)/staging_dir/host \
 		--with-mpfr=$(TOPDIR)/staging_dir/host \
 		--with-mpc=$(TOPDIR)/staging_dir/host \
-		--disable-decimal-float
+		--disable-decimal-float \
+		--with-diagnostics-color=auto-if-env
 ifneq ($(CONFIG_mips)$(CONFIG_mipsel),)
   GCC_CONFIGURE += --with-mips-plt
 endif
 
-ifndef GCC_VERSION_4_8
-  GCC_CONFIGURE += --with-diagnostics-color=auto-if-env
-endif
-
 ifneq ($(CONFIG_GCC_DEFAULT_PIE),)
   GCC_CONFIGURE+= \
 		--enable-default-pie