ortp: Move back to the savannah infrastructure

mirror.its.uidaho.edu is not reachable anymore and savannah appears
to be working again.
diff --git a/recipes-misc/ortp/ortp.inc b/recipes-misc/ortp/ortp.inc
index ef8bbc0..3e77a0e 100644
--- a/recipes-misc/ortp/ortp.inc
+++ b/recipes-misc/ortp/ortp.inc
@@ -5,8 +5,7 @@
 
 inherit autotools pkgconfig
 
-//SRC_URI = "http://download.savannah.nongnu.org/releases/linphone/${PN}/sources/${P}.tar.gz"
-SRC_URI = "http://mirror.its.uidaho.edu/pub/savannah/linphone/${PN}/sources/${P}.tar.gz"
+SRC_URI = "http://download.savannah.nongnu.org/releases/linphone/${PN}/sources/${P}.tar.gz"
 
 LICENSE = "LGPL"
 LIC_FILES_CHKSUM = "file://COPYING;md5=7fbc338309ac38fefcd64b04bb903e34"