tf-a-builder, tf-a-lts2.8-builder: Switch off UBL licensing for now

We're approaching UBL license rollover event (older license expires, new
goes into effect). For risk management purposes, we want to skip this
event on production, and re-activate only after a successful rollover
is confirmed (on staging).

Signed-off-by: Paul Sokolovsky <paul.sokolovsky@linaro.org>
Change-Id: I17e597b881b6bdf856f3b1d344ab9ddafc40ad05
diff --git a/tf-a-lts2.8-builder.yaml b/tf-a-lts2.8-builder.yaml
index b715e52..bd93506 100644
--- a/tf-a-lts2.8-builder.yaml
+++ b/tf-a-lts2.8-builder.yaml
@@ -102,10 +102,10 @@
             - text:
                 credential-id: LAVA_TOKEN_TF
                 variable: LAVA_TOKEN
-        - credentials-binding:
-            - text:
-                credential-id: ARMCLANG_UBL_CODE
-                variable: ARMCLANG_UBL_CODE
+#        - credentials-binding:
+#            - text:
+#                credential-id: ARMCLANG_UBL_CODE
+#                variable: ARMCLANG_UBL_CODE
     builders:
         - shell: |
             aarch64-none-elf-gcc -v || true