travis-ci: remove duplicate build

There were two sub-jobs to build arm1136. Remove the duplicate.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/.travis.yml b/.travis.yml
index a172180..00be5ff 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -85,8 +85,6 @@
     - env:
         - BUILDMAN="arm1136"
     - env:
-        - BUILDMAN="arm1136"
-    - env:
         - BUILDMAN="arm1176"
     - env:
         - BUILDMAN="arm720t"