Remove flo's obsolete ARCH_ARM_HAVE_TLS_REGISTER setting.

Change-Id: Ia12890609cfb50048cb1e2b0919883cfaba41666
diff --git a/BoardConfig.mk b/BoardConfig.mk
index ae1f0ef..c0f8d30 100755
--- a/BoardConfig.mk
+++ b/BoardConfig.mk
@@ -22,7 +22,6 @@
 TARGET_ARCH := arm
 TARGET_ARCH_VARIANT := armv7-a-neon
 TARGET_CPU_VARIANT := krait
-ARCH_ARM_HAVE_TLS_REGISTER := true
 
 TARGET_NO_BOOTLOADER := false