Revert "util/crossgcc: Build Ada frontend by default"

This reverts commit 89798bcb0cee369cd2aaeda8704d23d347dbe192.

Disable building gnat again as it turned out that many distros don't
ship with a sufficient recent version of gnat. We'll have to find a
reliable way to check for the installed gnat version and query the
user or bootstrap gcc in that case.

Change-Id: Ife7cf7c9d1567aca898ce308b120a7b9e146e5f5
Signed-off-by: Nico Huber <nico.huber@secunet.com>
Reviewed-on: https://review.coreboot.org/13422
Reviewed-by: Patrick Georgi <pgeorgi@google.com>
Reviewed-by: Martin Roth <martinroth@google.com>
Reviewed-by: Timothy Pearson <tpearson@raptorengineeringinc.com>
Tested-by: build bot (Jenkins)
diff --git a/util/crossgcc/buildgcc b/util/crossgcc/buildgcc
index d0843fa..b4f8c6b 100755
--- a/util/crossgcc/buildgcc
+++ b/util/crossgcc/buildgcc
@@ -18,14 +18,14 @@
 
 cd $(dirname $0)
 
-CROSSGCC_DATE="January 22nd, 2016"
-CROSSGCC_VERSION="1.34"
+CROSSGCC_DATE="November 25th, 2015"
+CROSSGCC_VERSION="1.33"
 
 # default settings
 PACKAGE=GCC
 TARGETDIR=$(pwd)/xgcc
 TARGETARCH=i386-elf
-LANGUAGES=c,ada
+LANGUAGES=c
 DESTDIR=
 SAVETEMPS=0
 SKIPPYTHON=1