Clang supports armv5te now

Remove the -march=armv5te -> -march=armv5t translation for clang.

Change-Id: Icc9b7c5e9c6194d31387ca63b9f7179a2843d527
diff --git a/cc/arm_device.go b/cc/arm_device.go
index dc8ba81..ddda33c 100644
--- a/cc/arm_device.go
+++ b/cc/arm_device.go
@@ -153,7 +153,6 @@
 		slice[0] = to
 	}
 
-	replaceFirst(armClangArchVariantCflags["armv5te"], "-march=armv5te", "-march=armv5t")
 	replaceFirst(armClangCpuVariantCflags["krait"], "-mcpu=cortex-a15", "-mcpu=krait")
 	armClangCpuVariantCflags["krait"] = append(armClangCpuVariantCflags["krait"], "-mfpu=neon-vfpv4")