uclibc: cleanup unused ARC stuff

ARC is supported by uClibc-ng, cleanup old code.

Signed-off-by: Waldemar Brodkorb <wbx@uclibc-ng.org>
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>

package/uclibc/Config.in

@@ -18,7 +18,7 @@ config BR2_UCLIBC_VERSION_SUPPORTS_NPTL
 
 choice
 	prompt "uClibc C library Version"
-	default BR2_UCLIBC_VERSION_NG if !BR2_arc
+	default BR2_UCLIBC_VERSION_NG
 	help
 	  Select the version of uClibc you wish to use.
 

package/uclibc/uclibc.hash

@@ -4,8 +4,5 @@ sha256	62333167b79afb0b25a843513288c67b59547acf653e8fbe62ee64e71ebd1587	uClibc-0
 # From http://www.uclibc-ng.org/
 sha256  08be8dd22ac0c3806add88b813129fb3014437eddc9d78fc73eba7f33c4b4a9d        uClibc-ng-1.0.9.tar.xz
 
-# No hash for the ARC variant, comes from the github-helper
-none	xxx	uClibc-arc-2015.06.tar.gz
-
 # No hash for this git snapshot
 none  xxx  uClibc-7bf35c8b7d4a1f97174eb49f47f33946b282114c.tar.gz