Stop building for i686.

This build is broken at the moment. We'll need to fix it.

Author: iphydf

.travis.yml

@@ -39,7 +39,7 @@ matrix:
     install: brew install sbt
   - env: GOAL=release TARGET=aarch64-linux-android
   - env: GOAL=release TARGET=arm-linux-androideabi
-  - env: GOAL=release TARGET=i686-linux-android
+# - env: GOAL=release TARGET=i686-linux-android
   - env: GOAL=release TARGET=x86_64-linux-android
   fast_finish: true